Ferrari Mailing List: Tire Pressure for Aftermarket Wheels

[Charles Perry (charles]

What is the list's opinion on picking a tire pressure for aftermarket
wheels where the wheel differs signficantly from stock?

I ask because of my TR. It had the metric wheels when I bought it, so I
bought a set of 18" HRE wheels from Karl early on. They are obviously
very different from the stock wheels in both sidewall height and
construction, so I always picked the tire pressure by looking at the max
rating on the tire and backing it down some (like if the tire said 51
psi max, I would run them around 44-46. This is very unscientific. I
haven't seen uneven tire wear, so by that measure I assume it was OK.

Is there a way to calculate the best tire pressure? Should I pick the
factory recommendation from the 512TR since its wheels are nearly
identical to my current ones in terms of size?

I did Google the subject but only seem to get car-specific wheel
recommendations.

-- charles




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                          Charles G. Perry IV

Carolina Sound Communications           (843) 571-4488
1941 Savage Rd., Suite 200G             (843) 571-4492 fax
Charleston, SC 29407                     www.carolina-sound.com


       "The problem with doing things right the first time is that no

            one realizes how difficult it was."

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