Tyre profile query

[milleplod]

Morning all.

The wife's Cabrio is currently running 285 30 18 rears. Just been offered a pair of 35 profiles at a bargain price. Other than making the speedo under-read slightly, anyone know of any problems using these?

Pete

[KevinMac]

Morning all.

The wife's Cabrio is currently running 285 30 18 rears. Just been offered a pair of 35 profiles at a bargain price. Other than making the speedo under-read slightly, anyone know of any problems using these?

Pete

Speedo indicates 60mph, you will actually be doing 62.7 mph

Stock revs per mile = 815

285/35 reavs = 780

Stock Sidewall = 3.4inches

285/35 sidewall = 3.9inches

Circumfrence stock = 77.7 inches

Circumference 285/35 = 81.2 inches

Well you might notice less handling higher sidewall and probably less footprint, and better make sure they 35's dont rub anywhere.

Porsche tunes it's suspensions to the use specific tire sizes. Personally i would not do it!

Edited January 9, 2009 by KevinMac

[milleplod]

Morning all.

The wife's Cabrio is currently running 285 30 18 rears. Just been offered a pair of 35 profiles at a bargain price. Other than making the speedo under-read slightly, anyone know of any problems using these?

Pete

Speedo indicates 60mph, you will actually be doing 62.7 mph

Stock revs per mile = 815

285/35 reavs = 780

Stock Sidewall = 3.4inches

285/35 sidewall = 3.9inches

Circumfrence stock = 77.7 inches

Circumference 285/35 = 81.2 inches

Well you might notice less handling higher sidewall and probably less footprint, and better make sure they 35's dont rub anywhere.

Porsche tunes it's suspensions to the use specific tire sizes. Personally i would not do it!

Thanks for the reply....the tech info's useful! I'm with you on the 'don't do it'! A moment of madness, caused by the thought of saving a few pounds, led me into temptation....but its gone now! :rolleyes:

Pete