On 3/11/07 9:38 PM, in article 433Jh.1604$8o1.277@trndny01, "Hachiroku $B%O%A%m(B
$B%/(B" <Trueno@AE86.gts> wrote:

> On Sun, 11 Mar 2007 20:53:59 +0000, James Lewis wrote:
>
>>>> Just traded my 01 civic for the 07. My round trip commute is 121 miles
>> per
>>>> day and has been showing that on past cars for 13 years. My new 07 is
>> short
>>>> by 2 miles per day. Of course this is good on resale value (which
>> matters
>>>> none when you put 150k on a car)...just curious if others have same
>> problem.
>>>> I figure the 55 tires throw it off?
>>>>
>>>> mike
>>>>
>>>>
>>> Honda just settled a class action law suit for odometers that tallied
>>> the miles too fast. Assuming they fixed the problem to avoid any more
>> lawsuits,
>>> it is likely that all the other cars were wrong.
>>>
>>> You might try watching the odometer as you pass 40 or 50 mile markers
>> along
>>> the side of the highway. That will tell you how close it is to correct.
>>
>> Good suggestion, which I've done. I've also driven the route in 5 other
>> cars which each show 60.5 miles one way. Just thought someone might like
>> to know. Of course, my car may be the only one that has the different
>> reading? Maybe Honda decided to go too far in the other direction after
>> the lawsuit:-)...who knows.
>>
>> Mike
>
>
> Try this: google Tire size calculator Miata or Tire size calculator Dodge,
> or try 1010tires.com. THey have tire size calcs; I believe the miata has a
> cross-section of a tire that shows the size difference.
>
> Punch in the stock tire size and check the diameter, then punch in your 55
> series tires and check the diameter. This may account for your difference.
>

There's an easier way. Go to tirerack.com and bring up the tire comparison.
It gives the revolutions per mile number for each different tire.