truck in shop so time for tires finally...... 08 350 leveled. i have searched and asked but now i need definite yes or no......

will a 37-12.50-20 fit without issues or should i stay smaller......
the stock tires are 34" so its a little less then 3".
just nervouse and dont want to be outr money and unhappy....

my dealer and tire guy say no to 37's but others keep saying yes they will work.

any input on yokohama geolanders?
thanks.

 

I'm assuming from your post that you're running stock wheels since you mentioned stock tires...

I had this conversation a while back when my buddy looking for tires for his '08 F350 and he wanted my help...

Do NOT put 12.5 tires on a stock (8 inch wide) wheel. They are NOT the proper size, period. It doesn't matter how many people do it, that doesn't mean they're the right fit...sorry.

Just about every tire manufacturer has a "recommended rim/wheel width" specification on their website, and I couldn't fit a single one that recommended a 12.5 inch tire for an 8 inch rim.

Why does it matter? You may get it to fit (as obviously a whole lot of people have) and it may look right, but you don't need to be a tire engineer to figure out you're putting a whole lot of sidewall stress on the tire by fitting it on a wheel that's too narrow. And if you tow (as I do with my '10 F250 and he does with his truck) you could be asking for all sorts of trouble.

That's definitely trouble you don't need, and although it seems a whole lot of tire shops don't seem to mind that they're fitting the wrong size tire on a rim they sure would care if there was a catastrophic malfunction/failure followed by a wreck...or worse...

That's when the "I read it was OK to do it on the internet" excuse would fall real short in a court, etc.

What did he end up going with? Toyo Open Country A/T 285/75 R18 which, coincidentally, are double marked as 35x11.5 R18. The Open Country M/Ts are also available in the same size, and both tires are Load Range E rated, as they should be...

FYI, he's running an ICON Stage 1 (plus) 2.5 inch lift/leveling kit. 37s would have worked with it and have no clearance issues but cost, weight and mileage concerns prevailed.

Hope this helps...

 

I have the wrangler duratrecs and love them. I think i went up one size from stock. They fit stock, are great offroad, and seem to be wearing well. They ride smoother than expected as well. Those who have said they are squishy are underinflated.

 

I just got Goodyear Wrangler ATS 275/65R20 on mine. I would recommend them. Good all around tire and very stout and quiet. Don't know about Yokohama. I would not put 12.50 on an 8 inch rim.

 

Toyo Open Country A/T 50K mile warranty...if it matters.

 

Im trying cooper discovery sts-max.
The New Off-Road Tires For 2011 |

 

I have the Toyo Open Country A/T's now in LT285/75 R18E. I have right around 40,000 miles on them now. Probably gunna need new rubber by winter. They are just shy of 35" tall and they fit well on the stock rims. I believe you have enough clearance for 37" tires, but you have to have the correct rims. Safety issues are of concern as Ronin pointed out, and you'll probably have tire rubbing problems on tight turns with the 37" tires no matter which rims you have. For my next set of tires, I'll be taking a hard look at the new Cooper AT3.

 

I put Michelin LTX A/T 2, 20" on my truck, stock size and not as cool looking as others, but a 60k waranty and they ride nice and smooth and quiet. Taken it off the roads in the Utah desert with no issues at all in some old mining roads.
Read the reviews on them

 

I run Cooper's on mine. Second truck with them. Great tow tire, don't hold the heat and great for off road use too.

 

See OP? I'm not the only one saying the same thing here or on the "other site" where you asked the same exact question...are you seeing a pattern here or do you you just have your mind made up that it's OK to disregard the recommendations of EVERY tire manufacturer?

That should be an obvious rhetorical question, but the way this same thread is devolving on the "other site" it seems a lot of people are butthurt 'cause they did it wrong, and don't mind seeing the OP going down the same path. I'm just trying to break the cycle of stupidity is all...

 

Actually, 40K up to 17in wheels, NIL for wheels 18in and larger. Only the Passenger rated wheels are warranted for 50K.

I have the Toyo's as well and based on current wear, I believe they will hit 50k pretty easily.