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Wheels & Tires Semi-Tech General discussion of wheels and tires for the Ford Ranger.
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Old 04-07-2010
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285/75/16

Could I run this size tire on a stock 01 4X4 on a 16 inch rim with 4.5 Backspacing? Or would I be stretching it to far and need a lift? Any help is greatly appreciated. I have heard yes and no from tire shop to tire shop. I need some people that has experience in this issue if it applies to you. Thanks.
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Old 04-07-2010
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Ya I need the answer to this question too. And how big is this size in inches?
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Old 04-07-2010
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If using a metric to standard calculator it says that this tire is 31.8" in diameter, 11.2" of width, and 8.4" high. Yeah I've been trying to find an answer forever haha.
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Old 04-07-2010
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It's perfect. Run it...






Backspacing without the wheel width is worthless. What's the wheel width? If it's 10", it's gonna be cutting it close. But 8" or 7", you're perfect. Run it.
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Old 04-07-2010
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Well I have had local tire shops tell me that is a 33" or bigger? I have also been told 265/70r16 is a 33
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Old 04-07-2010
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Don't listen to tire shops.....they aren't as specialized in Rangers as we are...


Do your own calculating.... Metric To Inches Tire Size Conversion






rule of thumb.....Max is 285/75r16 on a torsion bar truck w/ torsion crank. Stock wheels is fine. 8" with 4.5 or 5" backspace is fine as well. You can find all this and more in the wheels and tires section of the site in the sticky thread at the top.
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Old 04-07-2010
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its like 32.84" but yes, they should fit....They fit on my 06 fx4 with just a slight tbar crank....only rub when fully locking the wheel each way
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Old 04-07-2010
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and the guy at the tire shop looked at me like i was retarded when i wanted to put them on....and he looked retarded when he came back and they fit perfectly
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Old 04-07-2010
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Yeah man my wheels are 8" wide. Thanks alot for an answer! Next tires are gonna be 285/75/16!
Ha a 265/70/16 is smaller than a 265/75/16 which is just about a 31x10.50
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Old 04-07-2010
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Quote:
Originally Posted by Jelly's Ford View Post
Ha a 265/70/16 is smaller than a 265/75/16 which is just about a 31x10.50
Of course it's smaller....sidewall is only 70% of the tread width compared to 75% of the tread width. lol.
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Old 04-07-2010
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yeah, the 2nd number (75) is the height of the sidewall as a % of the width (265) so its slightly bigger
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Old 04-07-2010
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Quote:
Originally Posted by Jelly's Ford View Post
If using a metric to standard calculator it says that this tire is 31.8" in diameter, 11.2" of width, and 8.4" high. Yeah I've been trying to find an answer forever haha.
That would be a 265/75/16. A 285/75/16 would be 32.8 Tall 11.2 wide. Rangerboy101 has 285s on his truck https://www.ranger-forums.com/f69/ne...-shiney-97438/
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Old 04-07-2010
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Quote:
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Of course it's smaller....sidewall is only 70% of the tread width compared to 75% of the tread width. lol.
ahh, i try to answer two questions and you beat me to both seconds before
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Old 04-07-2010
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Exactly. Thanks alot!
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Old 04-07-2010
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Sweet!! Thanks guys. And sorry for the thread highjack!!!
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Old 04-07-2010
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Ranger boys truck looks sweet with those on there. Are those 4-ply or 6-ply tire I wonder?

Ranger4.0- no problem! I'm glad my question helped you out too.
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Old 04-07-2010
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Oh yeah and about tire shops... I had an NTB tell me that 31 10.5 15s were to big without a lift.
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Old 04-07-2010
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Quote:
Originally Posted by Jelly's Ford View Post
Ranger boys truck looks sweet with those on there. Are those 4-ply or 6-ply tire I wonder?

Ranger4.0- no problem! I'm glad my question helped you out too.
You'll want 4ply. aka C or D load rating. If it were more ply's, it'd ride like a freakin' tank since higher weight ratings are for 3/4 ton+ trucks.

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Oh yeah and about tire shops... I had an NTB tell me that 31 10.5 15s were to big without a lift.
DUDE......the look on the face of America's when I dropped off my 35's to be mounted on the wheels.......was HALARIOUS!! They asked what they were going on. I pointed towards a 1" BL'd ranger sitting in the parking lot. He paused and almost dropped a jaw and said, "ummm.....those are NOT gonna fit". HAHA! Then I said by monday, it'll have 8" of lift under it and YES, they'll fit. They then told me I'd need 10" of lift, maybe more. Tire shops know nothing.
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Old 04-07-2010
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Yeah that's what I heard about the tires being a four ply. It is just hard finding that size in such a small ply rating. Ah I'll find them somewhere. I'd really like a pair of nitto terra grapplers. They look sweet.
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Old 04-07-2010
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I am currently running 285 75 R16's.. Cooper STT's love them.. tire's run different sizes for between different manufactures.. like a pair of nikes are sized different than a pair of say 5/10 guide tennis.. get the dimentions straight from the manufacture. the stt's run right around 32.84 new. With a 2" T bar crank I still needed to trim a small portion of inner fender well on each aft inboard side..

Hope you have 4.10's and a 4.0.. I think on 3.73's it will be a lil more sluggish out of the hole.. (Also remember your speedo will be off by 6% because your changing the final drive ratio)...

Also look into the weight of the Tire. don't hold me to it but last time I looked a Trxus MT ran 106lbs for just the tire.. The Coopers were: I think in the high 80's

Less rolling mass your turning the happier your truck and wallet will be.. I.E. in fuel milage..

have fun shopping...
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Old 04-08-2010
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Quote:
Originally Posted by RedOctober View Post

Hope you have 4.10's and a 4.0.. I think on 3.73's it will be a lil more sluggish out of the hole.. (Also remember your speedo will be off by 6% because your changing the final drive ratio)...

I hope you have it yes!! because i got 4.10 and a 4.0 with M/T in 265/75/16 and i don't know if it because my truck is manual but i think 285 will be to big.I would considere regearing with those beefy tires...
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Old 04-08-2010
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I'm running 285/75's and I have no issues. I have the same backspacing as you mentioned by the way.
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Old 04-08-2010
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Im getting 285/75s when i get new tires
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Old 04-08-2010
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Do it. Best mod I've ever done.
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Old 04-08-2010
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Then i wont get stuck as easy.. but when i do it will be harder to get unstuck
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