Don't go smaller. Don't use A/T or mud tires if you can help it.
Use highway tires and snow chains. They will be the badest mud tires you will ever see.
Water injection does not appear to help gasoline engines, every test I have seen decreased fuel economy or did nothing.
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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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