Humy

Hey dudes,

Running stock wheel and tire sizes for a C5 and I want to change to a 18/19 set up. Finally ditching the chrome bling wagons , due to there not being a 18/19 replica set available.

Basically, if I put C6 size tire and rim sizes - will there be any speedometer modifications?

Here's the complicated version... since I currently have a 45 profile and a 17 inch rim & a 40 profile and a 18 inch rim... if I change to a 40 profile and 18 inch rim & a 35 profile and a 19 inch rim, there should be no speedometer modifications right?

Thanks guys and have a great weekend

Glennm27

Try this to help you out..

This little calculator will give you the answer you are looking for

Tire Size Calculator

JWB ZO6

everthing you need to know

Humy

So the stock C6 size set up is very close diameter-wise, so no modifications need to be made? (i hope)

Glennm27

By using that calculator.

The OEM fronts on a C5 coupe and C6 coupe are BOTH the same diameter. 245/45x17 & 245/40x18

The rear diameters are very close, C5 at 26.7, C6 at 26.9
275/40x18 & 285/35x19

TM-Z06

Here's another tire size comparison page:

http://www.1010tires.com/TireSizeCalculator.asp