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Down sizing your tires means you have to run your engine faster to go the same speed as before and you get more tire revolutions per mile. The belief that smaller tires are better started about 10 years ago when the prius and other small tire cars were hitting the roads and getting very good mileage. Yes the smaller tires worked for those vehicles because they were geared to take advantage of a small wheel. People wrongly assumed the smaller tire could be applied to any vehicle.
Hey frank, A P265 tire could easily be a 32 inch tire. That might be too much, when going from a vehicle setup for 235/75. I replaced my P235/75r15 tires after I figured out the hard way they couldn't carry any where near the weight the suburban was rated for.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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