I'm not sure what weight trailer you pull, but 37" tires on 18" rims might be more sidewall than you're comfortable with towing heavy.
I run a 35" tire, but they are on a 20" rim; I have run a 35" tire on an 18" rim, and I wouldn't want any more sidewall for my setup, just my opinion.
Not that you can't tow with a 37" tire.
I'm sure some people tow heavy with the '40s, just not me.
I switched from my stock to 3.42 gears and put 4.10 gears in.
I like them with the 35" tires; if I had the 3.73's from the factory, I definitely wouldn't have switched, but I didn't like the 3.42, especially with the 35" tires.
I wouldn't suggest deleting your grid heater if you live in a cold climate.
Just grab your heater bolt and wiggle it every oil change, and if you're worried about it, change the bolt out every 50-75k miles.
It's cheap and doesn't take very long.
Just my 2 cents.
Bookmarks