MWinland Posted October 12, 2007 Share Posted October 12, 2007 With 4.10 gears, what is the optimum tire size? 4.0L with AW4 Is 33" too much? Link to comment Share on other sites More sharing options...
UNL1MTD Posted October 12, 2007 Share Posted October 12, 2007 i'm running 31s with a 4.0/manual and I absolutely love it. Link to comment Share on other sites More sharing options...
89eliminator Posted October 12, 2007 Share Posted October 12, 2007 i run 4.10s with the 4.0/aw4 and it is perfect. i still get 20mpg and the powerband is spot on. you could probably do 4.56s. Link to comment Share on other sites More sharing options...
Pete M Posted October 12, 2007 Share Posted October 12, 2007 With an auto trans, 4.10s and 332 or 33s should be fine. I assume you already have the 4.10 gears? Link to comment Share on other sites More sharing options...
Renegade Posted October 13, 2007 Share Posted October 13, 2007 I just installed 4.10's today. Running 32's with the Renix 4.0, auto. It didn't like overdrive before & now it rolls along nicely. Won't win a drag race but it's liveable. I really wanted 4.56's, but I scored a free R&P from a friend's YJ that got 4.88's. Gotta love freebie's. Link to comment Share on other sites More sharing options...
Eagle Posted October 13, 2007 Share Posted October 13, 2007 I consider the optimum combinations to be 4.10 gears for 31" tires, 4.56 for 32" tires, and 4.88 gears for 33" tires. YMMV Keep in mind that 31" tires with 3.73 gears is exactly the same final drive ratio as stock tires and stock 3.54 gearing. 4.10s with 33s is probably going to effectively be about the same as a stock setup.In other words, livable but hardly optimum. Just checked my charts. In overdrive with the 4.10s you'll be turning 1965 engine RPM at 60 MPH. With stock 225/75R15 tires and an auto, 60 MPH is 1938 RPM. You'll be okay on the road, but you won't have a great crawl ratio without more gear. Link to comment Share on other sites More sharing options...
dakal Posted October 13, 2007 Share Posted October 13, 2007 i run 33's with 4:10's with ax15. i have good punch in all the gears. in 5th i think i would like a touch more overdrive, but still thinking about it. Link to comment Share on other sites More sharing options...
FxRacing282 Posted October 14, 2007 Share Posted October 14, 2007 hmm around here ive seen all sorts of mud trucks with 35's crawl rocks and shoot mud sky high with highway gears 4.10s arent needed for 31's but they do make things easier. remember that an engine can run past 3000 Link to comment Share on other sites More sharing options...
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