Wheels

An alteration to these parameters settings can aid in handling if necessary:

• Custom Wheels, although making this adjustment alone won't make much of a performance difference. 

• Rim Diameter, makes a very negligible difference.

• Rim Width, strictly visual difference.

• Offset, will give the vehicle more stability. Ideal for vehicles that struggle with on throttle traction.

These 4 settings may not increase performance alone, but with a combination of the following wheel upgrades the performance differences are accentuated. Wide Body & Wheels Overview will cover these combinations in greater detail.

In short, I would keep all wheel dimensions standard sizes, to reduce any chance of wheel to fender interference.