ZR and R are the speed ratings. The sidewall of the tire is determined by the 2nd number. You will need to change the 40 profile to a 45 or 50 depending on how much lower your car is than stock.
With a you are pretty much stuck with a low profile tires. Upvote 0. While Z-speed rated tires are capable of speeds in excess of mph, how far above mph was not identified. That ultimately caused the automotive industry to add W- and Y-speed ratings to identify the tires that meet the needs of new vehicles that have extremely high top-speed capabilities. Click to expand He wants more of a sidewall so he will need to go from a 40 to a 45 or 50 depending on how low his car sits.
Rode a little high but that's what you gotta do. Wow, everything I've been told and read said that you can't put that big of a sidewall on 18's without rub. You must log in or register to reply here. Similar threads. Question new tires and rims. Replies 2 Views Jul 27, thumper.
Question 2G Rims and tires need help. EazyLoc Nov 17, Newbie Forum. Replies 10 Views 1K. Nov 18, Chumpaumpalumpa. Question Tires and wheels. Replies 10 Views The codes on the sides of tires are unfamiliar to most car and truck owners, but knowing what the codes mean is important to choosing the proper tires.
The speed rating tells you the speed the tire can safely maintain over time. A higher speed rating usually means you will have better control and handling at higher speeds - and that the tire can take the extra heat.
As a general rule, tires with higher speed ratings also handle better at slower speeds. Your speedo will be off. Avoid bigger wheels if you want a smoother ride. As a general rule, bigger wheels result in a rougher ride. Switching to a smaller wheel and a thicker tire can give you a smoother ride without any major modifications to your car. As a general rule of thumb, it's safe to fit a tire up to 20 millimeters wider than stock on the original rim.
The actual width of the tire will vary depending on the width of the rim: The tire will expand 5 millimeters for every half inch Tyres can range in longevity from 30, to 60, miles depending on brand. But there are steps you can take to make them last a little longer. Avoiding heavy braking and ensuring your tyre pressure is checked regularly are a couple of steps you can take. You could also rotate them and align them regularly.
When you plus size wheels Offset is usually stamped or engraved into the wheel and is measured in millimetres of 'ET' [ET is the short form of the German word 'Einpresstiefe' which literally translates as ' insertion depth '] Positive Offset wheels have their mounting face toward the front face of the wheel. The T or H part of the code indicates the speed rating of the tires. A speed rating of T indicates that the tire can be safely driven up to mph. A tire with an H rating has a higher limit -- mph -- which means it can be safely driven faster than the tire with the 94T code.
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You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Does anybody know the difference between R and ZR when it comes to tyres?
Thread starter Djl Start date Jan 13, Djl Registered User. Unfortunately hit a massive pot hole last night and my front left tyre is now ruined. Does anybody know the difference?
Arcam Registered User. Djl said:. Pinky Registered User.
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