So for someone like me even 31 (stock) tires are over the limit because I have flat fender flares installed. Black Ice 2007 Nissan Navara ST-X 4x2 V6 6 Speed . It can also go the other way, adversely affecting the way a car behaves on the road. Making it as simple as possible to find the tyre that is just right for you. Since the blitz in Qld, police in NSW have also started paying close attention to 4wdrivers that are lifted slightly over the limit. I track Miatas and for best performance use 225 width tires on 9" wheels. If you have any questions about tyre sizes, please give us a call on 02 8880 4628 or you may find this online tool helpful. . When it comes to these results, it is recommended that you only use options within 1.5% and -2%. So sometimes therell be another model that has a bigger tyre placard and you can use those numbers instead of the numbers on your placard. 2 inch lift and the same size tyres. Use this page to work out the radius, circumference and diameter of any size tyre. The article can be found here: http://www.rms.nsw.gov.au/registration/downloads/vsi/vsi6.pdf. So that's 42.5mm increase and my suspension setup has lifted the car pretty close to 50mm. A tyre size conversion calculator or tyre diameter calculator are the best ways to get the answers you are looking for. Many thanks, Effectively, you are limited to a 50mm bigger tyre and 25mm suspension lift without engineering. Any accidents caused by illegal tyres may not be covered by your insurance company. They have however started measuring the hight of the lift from the center of the rim to the underside of the wheel arch. the 285/75R16 is a legal tyre . Ive spoken to insurance companies on the past, and told them of lift kits and bigger tyres on several vehicles, and they all say Sure, no worries, Ive added it to your list of modifications and you are covered. Legally in Australia, tyres must have a minimum tread depth of 1.6mm. Its not worded very clearly, is it? Overall original diameter means the maximum outside diameter of the largest tyre specified by the vehicles original manufacturer as an option for the vehicle, as shown on the vehicles tyre placard. Current Size. You will find that theres no benefit going too wide though, and it will increase the chance of it scrubbing. Calculate your offset, compare tyre stretch, rolling radius and more. While Changing your Wheel and Tyre Size, Focus on Overall Diameter to ensure. Good to know. What happens when my Tyre Tread Depth is below the legal limit? If you want more information, check out our page covering 4WD Legalities. Transport for NSW VSI.09, Rev. Just type in the metric fields and click convert to inches. Let us know about your P275 / 35 ZR20. So if your standard fitment was a 15 inch wheel, a Plus One tyre would be 16 inch and a Plus Two would be 17 inch etc. Youve brought up a very interesting question. This second number is that percent. Start by entering your tyre size. Disclaimer: This page will calculate metrics for informational and general comparison purposes only. Thank you very much, Aaron, any suggestions or tips would be greatly appreciated. size and click on "Show Optional Tyres for the New Wheel" - the orange button. However, since your tyre is always in constant friction with the road, the tread will eventually wear down. Tyre dimensions explained. Now, I understand this post may get your blood boiling a bit, and I totally understand. Tyre and Rim Standards Manual, issued by the Tyre and Rim Association of Australia This calculator allows you to tell the difference between the tires in inches, centimeters, and percentages. Incorrect tyre pressure Great to hear your engineering was so cheap. If the tyres you are running are bigger than 50mm than the number stated, you have a problem. There are a lot of heavy duty springs that will lift the vehicle around 30mm. DAP Pricing Unless otherwise stated, all prices are shown as Manufacturer's Recommended List Price (MRLP) inclusive of GST, exclusive of options and on road costs. Motor vehicles in Australia are subject to many complex but necessary safety standards, and tyres are no exception. You already have one wheel As we have increased 20 mm width for the upsizing tyre, therefore, the . The sidewall heights are:- 265mm. For a better experience, please enable JavaScript in your browser before proceeding. Do the same for another set you want to compare them with. eg. Example not requiring certification: Replacing 215/65R17 (712 mm overall diameter) tyres with 235/65R17 (738 mm overall diameter) tyres, an increase in overall diameter of 26 mm, or 4%. The listed diameters are from calculations based on the tire size. Dated 25 October 2018. You see, you are required to tell your insurance company about any modifications done to the vehicle. Is the 8.25-16 on toyota 80 legal regardless the actual diameter? When it comes to these results, it is recommended that you only use options within 1.5% and -2%. Our tyre size comparison calculator takes the measurements of two tyres and compares the overall diameter, tread width, sidewall, and difference percentage (%). It is better to play on the safe side and keep your vehicle looking good, to avoid the chance of getting pulled over and given a yellow sticker! With Tyrepower Buy now. The only other solution is you reduce the modifications done to the vehicle so it complies without the need of engineering. Have a chat to ARB they might have a spring setup that suits. Your brakes may fail if you go any higher. Checklist for fitting upsized wheels and tyres Tyres must be legal for road use Tyres must match or exceed the speed and load rating for the vehicle . The nominal tyre size can be quite different to the measured tyre size. To be blunt, in the event of an accident, your insurance company can literally tear your policy up and walk away without paying a cent. 1. In regards to breaking the law, I dont think so, but confirmation from your local road authority would put your mind at rest. A lot of people know their 4WDs are illegal, and dont seem to care. You may also need to consider a wheel alignment service. A race 225 width tire on a 6" wheel will perform better than a street 225 width tire on 7" or 8" or 9" wheel, or a street 245 width tire for that matter (if the car has enough horsepower). At the RTA (NSW) they said a 750R16 is the same diameter as a 235/85R16. it really depends on the officer that pulls you over ,you carnt get 22 inch tyres with the legal load rating to suit the ve,the 22 inch wheel size is ok ,but put an hsv tyre plackard on just incase your . Our tyre size comparison calculator takes the measurements of two tyres and compares the overall diameter, tread width, sidewall, and difference percentage (%). Its hard to get this sort of information from insurance companies too, but perhaps it would be worth a go. This means the maximum size is actually 813.3mm. Sorry to hear mate. Interest free. %PDF-1.6 % Do electric vehicles really need specialty tyres? I cant speak for Tas mate. This formula is used by the leading tyre manufacturers. Upsizing or fitting taller / larger tyres will reflect a slower speedometer reading than your actual speed. Calculate metric or inch tyre dimensions and compare to similar tyre sizes. Call our friendly customer service team. Price Beat Guarantee Specials View Cart (0) Toggle navigation. When upsizing the wheels and tyres, the overall diameter must be no more than 15mm larger or 26mm smaller than the tyre size designated by the manufacturer for that particular model. An interesting write up. Learn more Nitrogen Inflation Many also refer to the National Code of Practice and VSB 14, but there are also some state regulations that can differ. If youre intending to modify your car so it rides low, its recommended you ensure it still meets legal requirements. Hey guys just wondering if able to run 285/75/r16 on a Rg ltz 16x8 and if they are legal in qld and nsw. (OE TD - OE WD or 2 x OE sidewall height). Im not sure what the regulations are over there, Thanks for that.I will give them a phone call. Load index, Rim width and measuring rim for tyre size chart, Tyre width for rim width chart. The only way this does not apply is if it has been signed off by an engineer. Tire Size Calculator - tire & wheel plus sizing courtesy of 1010tires in Canada . If you want to know What is the legal lift kit height, make sure you also consider the tyre size change, as this is what usually catches people off guard. 6. If caught driving an illegal tyre, you will receive a fine and demerit PER TYRE below the legal limit- which varies per state/territory. It calculates the tyre dimensions for plus sizing. The truck weve been waiting for has been durability tested Down Under, Ranger Raptor wins Baja 1000 and drives home, Why the Ranger Raptor has changed the game. 2. So youre entitled to work your figures based on the taller tyres even if they werent original to your particular car. Ok so for the practicalities, if it rides like a boat then it is illegal, if in the braking arena you bend the pedal, foot well or your leg or presents anxioty than its possible illegal or brakes are not up to spec. The police has no real job in this country.Therefore they giving #### to the motorists for no reason.Australia is the most over regulated country in the world.A nanny state.In America ,people can put all kinds of wheels on their car,how come we cant?We dont live in a free country unfortunately.Some stupid people trying to control everything we do,like in a police state. Example not requiring certification: Fitting a replacement fuel tank of equal capacity using the original manufacturers mounting points. If there are bulges and cuts, have the tyre examined, as the damage may be more serious than it appears. 7.00R16. If you have an accident and they trace it back to the fact that the tyres youve fitted contributed or caused it, you will be in trouble regardless of what insurance you have. Within those limits, any rim diameter is allowed. The tire size comparison calculator takes the measurements of two tyres and compares the diameter, width, sidewall, circumference, and revolutions per mile. The third number generally preceded by an "R" is the wheel diameter. If we have a look at two tyre makers product lines that we have experience with in here at Adventure 4WD there's a couple of alternatives that offer far better strength. Anything below is considered unroadworthy. 4WD owners across Australia use a variety of different 4WD insurance companies to make sure their pride and joy is covered should the unthinkable happen to it. Anything below 1.6mm is considered illegal in Australia. The biggest legal tyre size is literally dependent on the vehicle you drive. Im looking at lifting my Hilux and was just wondering if the roof height included any roof attachments, i.e awning, roof rack, gas bottle holder etc or i s it worked from the manufacturers standard roof height from their vehicle specifications? original equipment(OE) tyre, between new tire and old tire. This tire calculator is for information . Yellow stickers can be issued for a huge range of things, from engine modifications that are not approved through to tyres sticking outside of the guards, oil leaks, cracked windscreens, perished seatbelts, big lift kits or bald tyres and the list goes on! Tire Deals/Promos Readers Rides Contact. It's time to get a new set of tyres to avoid possible blowouts and accidents. Then as a bonus it shows examples of your speedometer reading with the first tyre, and the actual speed you"re traveling if you were to install the second tyre. %. Tire diameter measurements vary for each pattern or brand. Discover our interest free finance options. Table columns headings: Column "Diff" may have percentages in the range from -3% to +4% (+5% for Winter tyres), which are allowed. Tread depth is how much tread you have left on your tyre and is measured in millimetres in Australia. are for the OE tyre(i.e., stock tire). NOTICE: Tire dimensions presented in the resulting table, as possible new tire dimensions for the Sponsorship welcome so long as independence is . call us on 1300 367 897 or search by vehicle registration below. that says that the new tire diameter has to be in a certain range in relation to the entered tire size(which for the Aus Navara is a 255/70 . The thing is it came stock with alloy wheels and 225/60/R18 road tyres. It possibly is correct, but itd be good to know for sure. Notice: When practicing Plus Sizing methods, changing tyres and wheels, The sidewall and aspect ratio are used in metric sized tyres to determine the overall height of a tyre. You may also like to try the Tyre Size Calculator. Use Tyroola's tyre calculator to find substitute tyre sizes for your vehicle if you're looking for a change. Input your search keywords and press Enter. If you are considering replacing your tires with a different sized tire, you can conduct a size comparison, which can help you determine what alternate tire sizes will work on your vehicle. We'll reach out to you as soon as we can. In fact, the actual diameter of 8.25-16 is 865mm. The size should be printed underneath the tire manufacturer name, just above the rim of the tire. To find alternative tyres, simply click on each size to see what Tyroola has available. you needs, but only to give you a suggestion in your quest for the final answer. Put safety first when using the road and ensure youre performing regular tyre examinations and tyre maintenance. and Terms of Service apply. Misaligned wheels Get recommended upgrade/replacement tire sizes, with adjustable difference variables (rim size diff./section width diff./circumference diff.) If I do not have engineering approval, will the police give me a yellow sticker? There are many more possibilities and choices in metric tyres so the use of a tyre size calculator can come in handy. I currently have a 3 lift with 35 tyres on a dealership purchased 2013 XLT Ranger, Ive been looking at the engineering list and sent out a few emails but noone has actually been able to put into steps just exactly needs to be done so I can avoid getting stickered. If your tyres are about to hit the legal limit, consider replacing them with a new set from Tyroola. In other words, 1 inch goes above the diff, and one inch below the diff. First step is to find a quality engineer, although it sounds like youve already been trying that. By fitting larger tyres, your braking capacity is reduced. https://mr4x4.com.au/4x4-suspension-modification-laws-suspension-manual-published/?utm_source=ActiveCampaign&utm_medium=email&utm_content=4X4+suspension+Laws+published+-+read+them+here&utm_campaign=PC+Newsletter+154+(Copy), http://www.rms.nsw.gov.au/documentscations-manual-suspension-and-ride-height.pdf. If that's the case, the tyre's greater sidewall height (shown by the aspect ratio) might make up the difference in rolling radius. In NSW you are allowed to fit wheels that are up to 26mm wider than the manufacturers specified wheels without needing to notify the Roads and Traffic Authority (RTA). you install the larger wheels on a car. NSW releases simpler modification document. I know, fake 44, but Im on a budget! It also solves the problem of deciding what tyre you would like to run if you have inch measurements in mind but can't find a company that manufactures that inch size tyre. Our tire size calculator will help you estimate the difference of external dimensions of the wheels, height clearance, revolutions per mile and other characteristics, when installing tires of other sizes on your vehicle. Buy now. We'll come to you - at home, work or even while you shop, A beginner's guide to the basics of tyres, Learn about all replacement indicators and how to maximise the lifespan of your tyres, Learn about the maximum load a tyre can carry, The tyre pressure needs to be checked regularly. The diagram below shows the permissibile conversion from a 15" through to a 20" tyre. I dont see it changing any time soon! PDF. See below for more information on what this refers to. Im in WA and have a Suzuki Grand Vitara Prestige. This is not the only legal tyre size.