I changed rear widths, change fronts too?
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I changed rear widths, change fronts too?
Well I did it. Changed my rears to a 245/35 18 and I am still running 225/40 18's.
Do I need to drop it down to 215/40 18's????
Also if the Speed rating is different does that effect handling too? Front's are Z's and Rears are Y's. They both have about the same treadwear rating. 20 points difference.
Do I need to drop it down to 215/40 18's????
Also if the Speed rating is different does that effect handling too? Front's are Z's and Rears are Y's. They both have about the same treadwear rating. 20 points difference.
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Are you using the same tire front and rear? If not that will cause the handling to be off. The best thing is to match the tires front and rear. Not may people make a 215/40R18 tire so that will be tough to find a matching tire.
Jim
Jim
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Originally Posted by Jim@tirerack,Sep 13 2004, 09:39 AM
Are you using the same tire front and rear? If not that will cause the handling to be off. The best thing is to match the tires front and rear. Not may people make a 215/40R18 tire so that will be tough to find a matching tire.
Jim
Jim
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I too am running 245/35R, 225/40F all four T1-S. Supposily, the tire diameter is a 1.32% difference and the speedometer difference is a 1.33% too fast. Also, comparing 255/35R and 225/40F the diameter difference is 0.24% and the speedometer difference is 0.241% too fast. I knew all this but the hell with it, i went for the 245 rears anyways. I saved $200 this way
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Originally Posted by F20C1,Sep 13 2004, 05:26 PM
I too am running 245/35R, 225/40F all four T1-S. Supposily, the tire diameter is a 1.32% difference and the speedometer difference is a 1.33% too fast. Also, comparing 255/35R and 225/40F the diameter difference is 0.24% and the speedometer difference is 0.241% too fast. I knew all this but the hell with it, i went for the 245 rears anyways. I saved $200 this way
Fronts diameters won't matter when it comes to spedo....
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