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On a stock truck without leveling kit you can run 33X12.5" tires if it is a 4WD and 31X12.5" tires if it is a 2WD, using stock wheels.
On a leveled truck(2" kit and larger) you can run 35X12.5" tires on a 4WD and 33X12.5" tires on a 2WD truck, using the stock wheels.
Using aftermarket wheels you can run 35s on a 4WD if the wheels follow these guidelines:
-For an 8" wide wheel the backspacing is 5.5 inches.
-For and 8.5" wide wheel the backspacing needed is 5-6 inches.
-For an 9" wide wheel the backspacing is 4.5-5.5 inches.
If the wheel specs are not listed about you will more than likely have to run 33s or even smaller to avoid too much rubber and trimming. These specs are the basics for tires fitting well but you could run 35s if the specs are very similar but you will face bad rubbing.
For a 2WD truck and after market wheels you can run 33s with wheels that fit withen these specs.
-For an 8" wide wheel the backspacing is 5.5 inches.
-For and 8.5" wide wheel the backspacing needed is 5-6 inches
-For an 9" wide wheel the backspacing is 4.5-5.5 inches.
If the wheel specs are not listed about you will more than likely have to run 31s or even smaller to avoid too much rubber and trimming. These specs are the basics for tires fitting well but you could run 33s if the specs are very similar but you will face bad rubbing.
Remember that these are the basics to running aftermarket wheels and tires, certain tires might not rub but others might because of aggresive sidewalls.
These specs should work for most people and instances but if you are worried about fitment get the tire shop to mount the tire on the wheel and put it on the truck then turn the wheel to full lock in both directions to see and possible problems. If the tires you plan on running aren't 12.5 inches wide you still might be able to run 35s because of that reason, for a 4WD and some aftermarket wheels or 33s for a 2WD. It's best if you can find wheels that are a happy medium between the two backspaces for the 8.5" and 9" wheels because you will face more rubbing if you go for 6" of backspacing on a 8.5" wheel instead of 5.5 inches that's right in the middle.
For those who are curious. The stock wheels(17 and 18") are 7.5 inches wide with 5.5 inches of backspacing. The bolt pattern is 6X135mm.
Big thanks to PawPaw on this one.
If you have any instances where you find that these specs haven't worked for you please let me know and I'll make the appropriate changes, please PM so I will see it.
Hope this helps.
So here's the deal, I have a 2008 F150 2wd on a 2 inch leveling kit and 33s on stock 17s but I want bigger. I want to run 22x12s with a -44 offset on 35s without spending thousands on a lift. Does anyone have any suggestions on what I could do ?
I am going to do a 4" lift on my 08 2wd. Want the clearance for looks, and to because of the flooding we get in FL due to the storms. Rough Country says I can get 33/12.50/20 on stock rims, but I have offset aftermarket rims. 20x9 Cali Offroad Busted 18 degrees of positive offset. I am hearing I could do 275/65/20, and others have said I could do 35/12.50/20. Rough Country doesn't know what will fit with offset rims.
Hello all, I am new to the forum and just introduced myself over on the introductions sticky! We just got my son his first truck; a 2008 F150 SuperCrew King Ranch. It needs a little TLC, but appears to be a good solid starting point. The first order of business it to get the Awful Fitting wheels and bald tires off of it. Attached are a few pictures. As you can see it has a pretty thick set of fender flares on it and these wheels still stick out. The current wheels are Moto Metal wheels with very shallow backspace / large negative offset. They now rub on the door end of the flares on both sides pretty bad. I am thinking this is because of the offset. They are 20s with 285/55/20 slap worn out BFGs. He likes the thicker sidewall look so we are thinking 17's. Here are my questions?
Will 17s clear the brakes/suspension
What backspacing / offset ballpark do you think I need to be in to get the tires to the edge of the flares (I do not want them sticking out)
Based on the pics, do you think I could fit a 315//70/17 BFG KO2 in there without rubbing? I know this would depend on the wheel too. Truck looks to be leveled, but I can't tell by how much with out taking the spacers out.
Any thoughts and suggests would be greatly appreciated.
I have 17's on my 05.. I used stock raptor wheels as I too like the extra meat in the tires instead of the wheels. So yes 17's work just fine. You can look up the raptor wheels and get the offset for them, but I think it was -35 if I'm remembering right.
I have 17's on my 05.. I used stock raptor wheels as I too like the extra meat in the tires instead of the wheels. So yes 17's work just fine. You can look up the raptor wheels and get the offset for them, but I think it was -35 if I'm remembering right.
I was thinking that stock F150 wheels have a +44 offset and Raptor wheels are +34. Is that enough to get out in the flares just right? I was thinking I needed to be between a 0 and maybe like +12 offset.
Does your 05 have aftermarket flares?
I was thinking that stock F150 wheels have a +44 offset and Raptor wheels are +34. Is that enough to get out in the flares just right? I was thinking I needed to be between a 0 and maybe like +12 offset.
Does your 05 have aftermarket flares?
Hello all, I am new to the forum and just introduced myself over on the introductions sticky! We just got my son his first truck; a 2008 F150 SuperCrew King Ranch. It needs a little TLC, but appears to be a good solid starting point. The first order of business it to get the Awful Fitting wheels and bald tires off of it. Attached are a few pictures. As you can see it has a pretty thick set of fender flares on it and these wheels still stick out. The current wheels are Moto Metal wheels with very shallow backspace / large negative offset. They now rub on the door end of the flares on both sides pretty bad. I am thinking this is because of the offset. They are 20s with 285/55/20 slap worn out BFGs. He likes the thicker sidewall look so we are thinking 17's. Here are my questions?
Will 17s clear the brakes/suspension
What backspacing / offset ballpark do you think I need to be in to get the tires to the edge of the flares (I do not want them sticking out)
Based on the pics, do you think I could fit a 315//70/17 BFG KO2 in there without rubbing? I know this would depend on the wheel too. Truck looks to be leveled, but I can't tell by how much with out taking the spacers out.
Any thoughts and suggests would be greatly appreciated.
Jamie
Would a set of 2018 Raptor wheels with the +34 offset and 315/70/17's fill out the fender wells and these flares?
What I would do first is put in the offset into the calculator at the link below to show the backspacing for the two different wheel setups (I assume you will be buying new tires as well). Then plug in the rim and tire selection into this calculator and it will show how much it will move the wheel in or out as compared to what you have today. Use than number to compare to the flares you have now and it should get you fairly close. Or you could measure first and then find a wheel / tire combo that best fit. Hopefully, this is clear.
04-09-2018, 09:57 AM
