Contour Enthusiasts Group Archives Forums Modifications Wheels & Tires EO tire size ?

When i bought my svt from the dealership they slapped on new 55/195 r-rated tires. What is the widest tire I can use on the factory rims.

.....ahh....ahh....they don't make r-rated tires for cars...the E0's came with 205/55ZR-16's and the E1's 215/50ZR-16....195/55 is narrower than the STOCK 205 width, so I don't see why they would put these on your SVT...you can go up to a 225/50-16 on stock rims, but 205/55-16 or 215/50-16 is more ideal...keep within high speed ratings such as a Z-rated (speeds over 149) if you can, but V-rated (up to 149mph...some beyond that) or at the absolute LOWEST an H-rated tred, but don't go above 130 mph...that's all their good for. It's get's a little confusing for the amateur tire purchaser when buying Z-rated because there are two "sub-ratings" for it...a W-rated (speeds to 168 mph) and a Y-rated (speeds to 186) which the SVT comes with. Most tires will say, for example, 205/55-16 and then 90H just for example...that letter is your rating. Z-rated will say 205/55ZR-16 and then 90W or 90Y (numbers are just an example). I hope this helps you in getting some better tred if that dealer DID put on the smaller 195's.

-Rob