LeaperV12

285/75 or 315/75's fit on a stock aluminum rim, do you know ?

i don't know anything about tire sizes but because i hardly tow and its cheaper to change the already due tires than change the gear ratio or put an overdrive unit. I was wondering, how to get the most RPM while still on stock rims, i still love these rims and dont want to change yet

thanks

AH64ID

285/70's, and 285/75's will fit perfectly, and 315/70's will fit, but not quite as perfectly.

The best tire for that is probably the 285/75. I will give you dang near the rpm drop of the 315, but fits the rim better.

LeaperV12

285/17 it is then

AH64ID,
Appreciate the reply

bonus

I have BFG 285's on stock rims,,,,, they have good traction, but man, the sidewall flex sucks. The stock Michelins had "NO" sidewall flex but poor traction.
THE BFG's have heeps of sidewall flex especially at 70MPH. For guys running 315's on stock wheels,, you got to be crazy....

LeaperV12

How much air you got in em ?
Logically, I would think increasing the air pressure would add some rigidity but then again speed and weight with or without some cargo would affect the equation too.
On a seperate note though, the BFG's i currently got,have the worst thread pattern any tire in existence can have. the threads are like magnets for snow, mud etc and then immediately the tires feel like slicks

bonus

I run the max 65PSI.

The mud, these tires are good, they do clean if you get on the throttle. I got the sticky red clay in my neck of the woods, and the AT's do Great in it. I have mixed feelings on these tires. They do flex, but the overall ride is better, they cushion better. They off road WORLDS better then st0ck tires.
Trade off is sidewall flex and stability at higher speeds.

LeaperV12

I guess there's always a trade off eh!

I will be in the market for tires pretty soon and it is interesting how each brand of tires has it's story that only a user can tell. Decision then will be a bit tricky

gsbrockman

Stockers :


LT285/70R17 Firestone Destination A/T's :


LT305/60R20 Goodyear Wrangler SR/A's on 20x9 Ultra Grinder wheels :


The 20's are in storage for the winter.....don't want to deal with the snow removal chemicals trashing them up.

psd1

Sounds like a "D" rated tire...yeah?

EQUIPPRO

My first set of stock tires BFG Rugged trails lasted 60k miles.

Then I went with 2 sets of TOYO Open Country AT 285/75/17 E . each set lasted right at 40k miles. Good overall tire, but they are very heavy tires.

I then went back to stock tires BFG Rugged trail 265/70/17 E. Only because I still had a brand new spare under the truck and only had to buy 3. I hate those tires, but money was tight last year and well you gotta do what ya gotta do. That set just came off on Monday and I got 52k miles out of them. I replaced with the BFG AT KO 285/70/17 in the new E range. So far I am very happy with these tires. I just hope they last. I didn't want them before only because they came in a D load range. Now that they are in E load range I think many folks will be switching to these tires. They look great also. I would post pics but I am in the process of giving my truck a 200k mile makeover. Pics soon to follow.....

Raspy

I noticed a very small decrease in mileage with 285/70/17s. But only about .5 MPG. No where near as much loss as with 315 BFGs.

Toyo 285/70/17s are the best tires I've ever had and the ones I plan to keep buying.

Here's my setup.https://www.dieseltruckresource.com/...6&d=1205096878

AH64ID

How are they wearing? Mine have been good tires but are now legally bald at 35K miles.

Raspy

AH64ID,

I put 61,000 on my set of 285/75s (shown) then went to 285/70 and have about 10,000 on those. The 75s are much heavier and stiffer. I'm liking the 70s more and more. Both are far better than the BFG 285/70 which had better snow traction but were VERY weak in the sidwall and not as round. Before eithr of those it was a set of 315/70 BFG. Those were fun offroading and in the snow but killed the mileage and pulled to the right, hard, in later life. Plus balancing was always an issue.

I like the 285s a lot more than the stock 265s.