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Old 05-21-2018, 07:42 PM   #9
lunge motorsport
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Join Date: May 2018
Location: San Ramon
Posts: 75
I tow a 30' 5th with many upgrades. My payload is 2981 and the coach is about 11k fully loaded. On all but the steepest grades it pulls along fine with the 4.10 final drive. The only problem I had was climbing out of Death Valley at WOT for 20 mins. The trans temp went to 243 deg. Shortly after that I replaced it with one 2.5 times bigger. Haven't hit that same hill again but also haven't seen over 180 deg. since. I strongly recommend wider rims, 7.5'' stock width gets pushed around by the coach. I use 9'' on the stock tire size and would have done 10'' if I could find the correct offset in a 17'' dia. wheel but no luck. Taller wheel tire combos change gearing and I didn't want that.
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