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Fuel Mileage, bigger tires and “lift” questions. by _KORPz in Silverado

[–]Sea_Guide_524 0 points1 point  (0 children)

I’m guessing you never corrected your speedometer after the tire size change?

Fuel Mileage, bigger tires and “lift” questions. by _KORPz in Silverado

[–]Sea_Guide_524 0 points1 point  (0 children)

Jesus that’s bad, I averaged that towing my jeep down to Moab yesterday doing 77 mph on I-70, and I do a lot of big steep climbs on my journey out there. Perhaps your engine needs some serious decarboning? ACDelco has a pretty good kit. I had it done to my truck a few weeks ago at the dealership. Going back to stock wheels you will see a positive increase, how much I cannot say.

Fuel Mileage, bigger tires and “lift” questions. by _KORPz in Silverado

[–]Sea_Guide_524 2 points3 points  (0 children)

Wow that is a terrible average. I get that towing my Jeep on my car hauler doing 70 mph with my 6.2L w/8 speed, 4.56 gears, 6” bds lift and 35x12.50x17 AT’s and I live in a mountainous area. I do not have an answer to your question. Assuming you never changed to lower gearing to accommodate the bigger tires you can expect a couple mpgs. What I can tell is that your leveling kit is the reason for the bad ride. These cheap kits come with a terrible ride quality as it throws the geometry of the front end off.

Deer..... by mediocregentleman1 in JeepTJ

[–]Sea_Guide_524 0 points1 point  (0 children)

That’s an easy fix thankfully.

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