[jim_trent]

It should be real easy to find the dimeter of the tires on the car at the time of the crash and compare the circumference to the originally installed tires. In most cases, it won't make more than a couple percent difference. Who really cares if he was going 114mph, or 112mph. You can bet that the lawyer did not do that (did not submit proof according to the article) because that is what it would have shown.

[Sir Gawain]

I agree it doesn't matter in this case. I was only pointing out that the electronic data on its own can't be used to verify correct speed.