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Old 06-06-2013, 11:38 PM   #10 (permalink)
oil pan 4
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Join Date: Jul 2011
Location: NewMexico (USA)
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Sub - '84 Chevy Diesel Suburban C10
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90 day: 19.5 mpg (US)

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Quote:
Originally Posted by aktacoma View Post
Oilpan4 did you see a decrease in rpm at highway speeds and mine has the 235/70 r 15's as well.
Of course it did. Thats going from like a 28'' tire to a 31''.
The lower cruse RPM made up for all the bad things larger tires cause.
The main thing was the 31'' load range C tires almost doubled usable weight capacity.
Also the P235s looked like clown car tires on the suburban.
Tacomas do not look right with the smaller tire.

The 4cyl tacomas all came with 4.1 rear ends and the over drive is pretty tall something like .63? to 1, depending on the year.
I try to get my friend to swap V6 axles on his tacoma, they have an E-locker on the rear and are 3.73. (I think it would be worth 2mpg)
My friend claims his tacoma weighs in at 4400lb at the scrap yard when empty.
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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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