I have an 06 mega cab 4x4 with a leveling kit and 35x12.5s on it currently. The 35s have plenty of room and don't rub. Has anyone tried 37x13.5s with my setup? I found plenty of trucks with my setup running 37x12.5 but not 13.5s.

 

I would think depending on wheels/spacers you may be able to make em work- my 35x12.5s rub a bit turning left with 17x9 5.5" back spacing- you'd want a lot of offset to push em out - you have fender flares or just want them to stick way out?

 

I'm looking to lower RPMs at 75mph. With my 3.73 gearing, 6 speed manual and 35s I'm doing 2250 RPM. The only non mud 37s in load E I can find are Nitto Exo grappler that are 37x13.5.

 

Dang well if you need to be moving 75mph I bet your in tx- check this link out

http://www.dieseltruckresource.com/forums/3rd-gen-high-performance-accessories-5-9l-only-107/37x12-5-metric-equivalent-load-range-e-296527/

 

I drive 50 miles a day for work, 90% of which is highway. Also Mississippi to Utah and back a couple times a year. I want the best tread life I can get in that size (muds are out) while lowering rpm and still have the ability to pull my 5th wheel. In that article the links that worked were E muds and D ATs. I hope to have the money next year to do a Gear vendors over/under drive. That will run me in the neighborhood of $5,000, where is running 37s over 35s will only be about $300 more.

 

the Pro comp A/T Sports are load range E. I but they are 37x12.5. 60K mile tread warranty

 

I'm running 17s. Pro Comps are only D in 37 for 17s. If anyone knows of a 37x12.5r17 non mud I would appreciate it.

 

Why not do wheels as well if you have to? Still cheaper than 5k!

 

The 37s are a temporary fix. I have no desire to spend and extra $1300 plus on a temporary fix.

 

Well the wheels you could keep permanently for whenever you get rid of the 37s or sell them with the set and get your $ back. Craigslist has cheap wheels usually. IMO a temporary fix is staying outta the skinny pedal and run 5-10mph slower and run the setup you have until you can regear how you want