Tire size for Enkei stock 18" wheels

BGTV8 · 06-24-2010, 05:58 PM

Quote:

Originally Posted by Cmike2780

I was wondering if anyone replaced the stock tires on the non-sport model wheels. How wide a tire can you go with these rims. I would like to keep the sidewall height the same. Any recommendations? The back ones right now just look way too narrow on this car.

I have an Australian-spec MY09 Z34 which has the Akebono brakes and 18" EOM wheels (8" at the front and 9" at the rear) and I have run 235/40R18 Kumho KU36 on the front and 275/35R18 on the rear with absolutely no problems. The car sits 3/4" lower on the road and you do get improved primary road grip as the CoG is ~20mm lower, but at the cost of speedometer overreading by another 4% - at an indicated 110km/hr I am onyl travelling at 101kph (69mph = 62mph). Side benefit is that the overall gearing is a little lower so accelration is improved ..

If you wish to keep the sidewall height the same, you will need to find:
Front: 235/45R18 which is under size by 8mm overall diameter
Rear: 265/40R18 which is undersize by the same amount

These are not common sizes but you may have access to a superior range of sizes in the US than we do in the land of OZ.

RB

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