>jim miller wrote:
>>
>> I also had put taller tires 275-60X15 on the 98 and they are taller than
the 235-70s
>> that came on the truck. Somebody check a tire chart and see what is
really true! Jim
>> M.
> The 275/60' and the 235/70's are damn near the same exact height. I
>tried the 275's on my truck, bfore I got the 255/60/15's (tad shorter).
>General rule of thumb is that given same rim diameter you can add 20mm
>to the tread width and take away 5% of the sidewall and they will stay
>the same height. Example: 215/75/15, 235/70/15, 255/65/15 (size on '99
>tire & handeling pkg.), and 275/60/15's are all the same height
>(roughly). This isn't an exact science but it works enough for speedo.
>readings.
>
>Erich 98 ext. cab v8 5spd.
This theory works just fine as long as the tires on are the same size
rim.... the Indy Ram uses a 17" rim... the Dak uses a 15" rim... that's 2"
difference in overall height, given the same sidewall height.
Gary Shook
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