Quote:
Originally Posted by travislambert
There is about -2% difference between the ZL1 and ZL1 1LE tire sizes. So not only will the speedometer be off, for every 1,000 miles there's going to be an extra 20 miles on the odometer due to the error. It's not a lot, but I think it's enough to annoy me.
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Most likely it isn't going to make a lot of difference, but I'm still interested in knowing exactly what might be impacted.
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Unless you know for sure that your current odo/speedo calibration is dead-nuts on, how much could this matter? Having a speedometer that reads 2% faster than actual means you're that much better off, though it'd have to be a really tightly enforced zone for 1 mph @ 50 to make the difference between getting a ticket and not.
My track tires are a little over 4% shorter than OE, and all I noticed was slightly stronger throttle response and having to shift at slightly different places and sometimes another time or two on road courses. My current street tires are 3% shorter than OE and I'm unlikely to ever buy tires for this car that are any taller than those.
Norm