It is the overall diameter of the tire that counts. Switching to taller tires can make a big difference. I have put taller tires on most of my Vanagons and there was always a drop in power. How much of a drop depends on how much larger. I like 215/75/15 because that the largest practical 15" size, IMHO. That is about a 7% increase in gearing effect. Power thus drops by about that much. With a heavy load and up hill it matters. Mark jeff livingston-carr wrote: >Hi All, >Does anyone think switching from 14" to 15" wheels will cause a significant >loss of power as perceived by the driver? I've heard that the bigger tires >and wheels may slow the vehicle. > >Thanks. > >Jeff >1991 MV > > > > |
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