Would I be ok with bigger tires?
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Would I be ok with bigger tires?
I have a stock 90 F150 2wd. It has the 300ci, E4OD, and 3.55. I currently have this tire size: P235/75R15. I want to go up to 31" tires, but I don't want any other problems to stem out from this change. I want some type of all-terrain tire. Would this be a problem for my gas milage, rear end, trans, etc. Also, would my truck look good with 31" tires?
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Not a prob. Your 235/75/15 is really 28.8 so a 31 is the next step up. The 3.55's will handle it well. You might actually get better gas milage. I have always found that when I went up one size. If you want 33's then you might have to regear, depending on how you drive, but in a 2wd you might be ok. 31's will look good on a 2wd. There are also alot of choices in a 31. Have fun.
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i also have a 300, 2wd, E4OD, and 3.55 rear and am planning on doing 31's...MAYBE 33's. i don't think it is wise to go over 33's with the setup we have. like bchunter said, may need a regear. let me know what you do and how it turns out...if you like it, you will probably talk me into 31's. 
chris
chris
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I went from 30's to 35's and HAD to do a regear (from 3.55 to 4.56). But then mine is 4wd and I like to crawl through the bush looking for bambi.
I don't think you will need a regear going to 31's, maybe in a 33, but most likly with 35's to at least 3.73, more like 4.10. Have fun with your rig.
I don't think you will need a regear going to 31's, maybe in a 33, but most likly with 35's to at least 3.73, more like 4.10. Have fun with your rig.
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My 2WD F150 has 31's on it with stock suspension and it looks damn good. I have BF Goodrich All Terrains 31x10.50, there's hardly any extra road noise or vibrations and I've beat the hell out of it and never hit the tires on the fenders.
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Thanks for the info guys! I'm not going to get new tires for a little while, but I'll let you know how it turns out.
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From: Paulding County
Originally Posted by bks90F150
Thanks for the info guys! I'm not going to get new tires for a little while, but I'll let you know how it turns out.
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Yes!
i have a BONE stock 2wd 1989 ford f-150 with the 4.9 six, 5 speed with a 3.08 rear end. i had a set of 235/75/r15 tires, and made the jump to 31x10x.50 sidewinders, with ford whitespoke steel wheels, and i noticed VERY little power difference, and i live in the mountains, and like rebel_trucker stated, they fill the fenderwells very nicely,..
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From: Chrisney Indiana
3.33 with 33 tires
I have an 81 ford with a 300 in it with 3.33 gears in it. I put 33 in bfg mud terrains in the back. I did notice a power loss but I actually gained fuel millage because the motor doesn't turn as many rpms for road speed. I like the setup although don't plan on doing any drag racing with it. I still have stock size on the front. I like the stance that it gives the truck. front is low and back is up there. It just looks cool
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