40's or 45's?? 215/205??
im replacing the 4 tyres again on my car, usually go for 205/45/17's as thats what was on it when i got it, whats the pros/cons on the slightly smaller rolling radius bu fitting 205/40/17?? lower top speed, better acceleration? will i notice any difference? will it still be ok on my car?
also what difference would fitting the slightly wider 215 make? cheers rory my car is a 97 uk turbo btw with twin 6 spoke techno mag wheels. |
Originally Posted by Rory_McW
im replacing the 4 tyres again on my car, usually go for 205/45/17's as thats what was on it when i got it, whats the pros/cons on the slightly smaller rolling radius bu fitting 205/40/17?? lower top speed, better acceleration? will i notice any difference? will it still be ok on my car?
also what difference would fitting the slightly wider 215 make? cheers rory my car is a 97 uk turbo btw with twin 6 spoke techno mag wheels. I don't think you'll notice the extra 10mm if you go for 215/40/17. If you fit other sizes your speedo will be out. Most people fit 215/40/17 instead of 205/45/17 as they are more widely available (Toyo, Goodyear, etc.) |
Other sizes ?
What about 215/45/17 ?
That is what I have on my '00 classic (came with wheels I fitted recently ) Would this affect gearing or speedo reading ? I have not felt any rubbing and they look and feel "right" Any thoughts ? Al. |
go for 215/40/17 had them on my classic and they felt great! the stiffer sidewall makes the car more precise
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Originally Posted by ally-b
What about 215/45/17 ?
That is what I have on my '00 classic (came with wheels I fitted recently ) Would this affect gearing or speedo reading ? I have not felt any rubbing and they look and feel "right" Any thoughts ? Al. The effect is to lengthen the gearing slightly - you will have poorer acceleration but higher top speed in theory. 205/45/17 are only 0.8% bigger and 215/40/17 are 1.2 % smaller so are a closer match to the original. There are various calculator tools on the web you can work this out with. I would have the 205/45/17 if possible, but since I'm using 7.5" wide rims I have 215/40/17 as 205 are not wide enough. |
i got the same dilema at the moment
i have 17x7.5" rims so will fit 215's but after just waving goodbye to 2 eagle f1's last night ,im tempted to up from the 40 profile to 45 and get something with a stiffer sidewall. am i likely to get any rubbing or any other problems ?? |
Originally Posted by Boost II
Compared to your original 205/50/16, you will find 215/45/17 have a circumference which is 2.3% larger and when speedo reads 70 mph you are really doing 71.6 mph.
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Originally Posted by rgv_stu
i got the same dilema at the moment
i have 17x7.5" rims so will fit 215's but after just waving goodbye to 2 eagle f1's last night ,im tempted to up from the 40 profile to 45 and get something with a stiffer sidewall. am i likely to get any rubbing or any other problems ?? The only real way to know is to find someone with your exact wheels and tyres on a similar car. |
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