want bigger tires without have any kind of lift kit or leveling kit

[Tyler St.Clair]

My 1994 f150 single 2wd currently has 235/75R15's on all corners and i would like to know what the biggest tire size i can put on my stock truck without investing in any kind of lift or leveling kit but also without any rubbing issues with the tires. Thank you!

 

[5.0Flareside]

Depending on front suspension wear you can fit 265/75/15 which are close to 31x10.5.


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[BuzzGun79]

Chris is correct...I run 31 x10.5 x 15 on my former 95 F150 4x4 stock height without rubbing issues..However going oversize greatly affected winter driving characteristics of the vehicle dramaticly...so save those stockers.....

 

[Tyler St.Clair]

One of my buddies has the tires 265 75R16's on is 1999 f150 extcab 2wd and i put one of his spare tires up against my rear and front tire and they look like they would just barely fit under the finder wells of either one. Maybe the rim size would make a difference but i don't know. I would hate to waste the money on that size if they arent even going to fit. Any other ideas?

 

[Tyler St.Clair]

Would getting a leveling kit help me out? I don't want to spend $500 on a lifting my truck just to get a set of bigger tires but if i would just go ahead and decide to level it would that help me out? Because frankly my stock tires on my ford look a little small inside the finder wells?

 

[5.0Flareside]

How big are you wanting? Cause like I said 31x10.5 fit.. And fit well..

Those that ya looked at your truck with are taller by a whole inch...


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[Tyler St.Clair]

They looked taller than 1 inch. They are at least 1 inch taller. But would i have to lift the front end up any to get the front end to fit right without any rubbing or will they fit with no lifting or leveling required?

 

[BuzzGun79]

is it possible for you to "bolt one up" on the front of rhe vehicle...to check for fit...a 16" rim size may play against this scenereo Tyler...mine were 31x10.5x15" rim...they did clear "barely" and i did no lifting or leveling of the vehicle...

 

[Beach66Bum]

One of my buddies has the tires 265 75R16's on is 1999 f150 extcab 2wd and i put one of his spare tires up against my rear and front tire and they look like they would just barely fit under the finder wells of either one. Maybe the rim size would make a difference but i don't know. I would hate to waste the money on that size if they arent even going to fit. Any other ideas?

This is the size I have on my truck ('83 F250 SC 2 wheel drive) same height as the factory 235 85R16's but the 265 75R16's are wider, have no rubbing or clearance issues.

 

[johny89]

mine runs 31 10.5 with worn out coil springs in front without rubbing, have had no hard problems in winter only when hard braking in snow trow it in neutral to stop faster

 

[Tyler St.Clair]

The Bolt pattern on the 16" rim is a little longer so they wouldn't fit on the hubs but if you guys think i can run a 31x10.5 on there with no issue then i will try it and see what happens. Thanks for the info it is much appreciated!

 

[Tyler St.Clair]

Ill try 31 10.5 15's. Thanks for your info it is much appreciated!

 

[RedLariat85]

You should have no problem running 31's on your truck. I ran them on the front of my old 93 F150 2wd I used to have. along with 32" meats on the back..truck drove awesome during winter..would go through most everything.

 

[primetime]

One of my buddies has the tires 265 75R16's on is 1999 f150 extcab 2wd and i put one of his spare tires up against my rear and front tire and they look like they would just barely fit under the finder wells of either one. Maybe the rim size would make a difference but i don't know. I would hate to waste the money on that size if they arent even going to fit. Any other ideas?

While the 265s may very well be an inch or more taller than your 235s, at least when they are standing side by side, the RADIUS is actually the more important dimension. The radius is the distance from the center of the hub (or pilot hole on wheel) to the outside of the tire. Clear as mud?

And like Buzz said, find another 31 that will bolt on, cycle the suspension and turn the wheel lock to lock to get an idea how they will fit, or where they will hit.

 

[Tyler St.Clair]

Thanks for the info

 

[Tyler St.Clair]

would putting 31's on my truck change my speedometer a hole lot? If so how can i get it exact again?

 

[5.0Flareside]

About 5 mph or so.. Changing the Vss in the rear end for those size tires..


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[kiwi f150]

would putting 31's on my truck change my speedometer a hole lot? If so how can i get it exact again?

Chris is right Tyler - you can change the speedo gears if you are really worried about it Tyler - here is a link for that http://www.transmissioncenter.org/Ford_Speedometer_Gears.htm
I use tyre charts pretty often when i get guys coming in wanting to get larger 4wd tyres for their mud trucks and farm buggys ....
Here is one i pulled up online for you comparing the difference between 235/75/15 tyres and 31/10.5R15.

235/75/15 31/10.5R15 Difference
Diameter inches (mm) 28.88 (733.5) 30.98 (786.84) 2.1 (53.34) 7.3%

Width inches (mm) 9.25 (235) 10.51 (267) 1.26 (32) 13.6%

Circum. inches (mm) 90.72 (2304.36) 97.32 (2471.93) 6.6 (167.57) 7.3%

Sidewall Height in (mm) 6.94 (176.25) 7.99 (202.92) 1.05 (26.67) 15.1%

Revs / mile (km) 698.39 (433.96) 651.05 (404.54) -47.34 (-29.42) -6.8%

Speedometer Difference Speedo Reading Actual Speed
20 mph (32.19 km/h) 21.45 mph (34.53 km/h)
25 mph (40.23 km/h) 26.82 mph (43.16 km/h)
30 mph (48.28 km/h) 32.18 mph (51.79 km/h)
35 mph (56.33 km/h) 37.55 mph (60.42 km/h)
40 mph (64.37 km/h) 42.91 mph (69.06 km/h)
45 mph (72.42 km/h) 48.27 mph (77.69 km/h)
50 mph (80.47 km/h) 53.64 mph (86.32 km/h)
55 mph (88.51 km/h) 59 mph (94.95 km/h)
60 mph (96.56 km/h) 64.36 mph (103.58 km/h)
65 mph (104.61 km/h) 69.73 mph (112.21 km/h)


One thing i would suggest Tyler is that if you are going to fit new tyres that are a larger size to your truck is that you go for a heavier ply rating - if you are looking at 4pr go for 6pr as that will help stiffen up the ride on your truck so that you don't wobble around all the corners especially when you want to exercise the ol right foot ...... the suspension on our trucks is certainly soft enough to still give a nice ride (for a truck anyway) when you fit a heavier ply rating.
i did this to my truck when i first got her but still kept the 235/75/15 size - i fitted 6 ply rated Hankook Dynapro RF10s all round and after 30000 miles they still have 6mm (1/4 inch) tread - they really firmed up the ride on my 87 f150 in the corners (we don't have beggar all straight roads out here) .

 

[Lost]

I have run 32's with no issues other than rad arm rub. but they are hard to find .

You say your coils are bad or soft those large tire will kill them and the bumps will push tires into things .

What $500 .. A set of 90's hd F350 2 wheel drive front coils will raise front at least a inch over new F150 coils . And be around $100 or less on flea bay. And other internet sellers. You said yours are bad .
They about hour to do a side after truck is up high enough on blocks. You may need HD chamber set but they are like $60 bucks . But I got away with stock one on most of mine.

And a allighnmanet which you should get any way.

So for under $300 you are good to go .

As said those coils need swapped before the big tires go on .. And you can get parts at a time till ready . good luck

 

[Lost]

Chris is right Tyler - you can change the speedo gears if you are really worried about it Tyler - here is a link for that http://www.transmissioncenter.org/Ford_Speedometer_Gears.htm
I use tyre charts pretty often when i get guys coming in wanting to get larger 4wd tyres for their mud trucks and farm buggys ....
Here is one i pulled up online for you comparing the difference between 235/75/15 tyres and 31/10.5R15.

235/75/15 31/10.5R15 Difference
Diameter inches (mm) 28.88 (733.5) 30.98 (786.84) 2.1 (53.34) 7.3%

Width inches (mm) 9.25 (235) 10.51 (267) 1.26 (32) 13.6%

Circum. inches (mm) 90.72 (2304.36) 97.32 (2471.93) 6.6 (167.57) 7.3%

Sidewall Height in (mm) 6.94 (176.25) 7.99 (202.92) 1.05 (26.67) 15.1%

Revs / mile (km) 698.39 (433.96) 651.05 (404.54) -47.34 (-29.42) -6.8%

Speedometer Difference Speedo Reading Actual Speed
20 mph (32.19 km/h) 21.45 mph (34.53 km/h)
25 mph (40.23 km/h) 26.82 mph (43.16 km/h)
30 mph (48.28 km/h) 32.18 mph (51.79 km/h)
35 mph (56.33 km/h) 37.55 mph (60.42 km/h)
40 mph (64.37 km/h) 42.91 mph (69.06 km/h)
45 mph (72.42 km/h) 48.27 mph (77.69 km/h)
50 mph (80.47 km/h) 53.64 mph (86.32 km/h)
55 mph (88.51 km/h) 59 mph (94.95 km/h)
60 mph (96.56 km/h) 64.36 mph (103.58 km/h)
65 mph (104.61 km/h) 69.73 mph (112.21 km/h)


One thing i would suggest Tyler is that if you are going to fit new tyres that are a larger size to your truck is that you go for a heavier ply rating - if you are looking at 4pr go for 6pr as that will help stiffen up the ride on your truck so that you don't wobble around all the corners especially when you want to exercise the ol right foot ...... the suspension on our trucks is certainly soft enough to still give a nice ride (for a truck anyway) when you fit a heavier ply rating.
i did this to my truck when i first got her but still kept the 235/75/15 size - i fitted 6 ply rated Hankook Dynapro RF10s all round and after 30000 miles they still have 6mm (1/4 inch) tread - they really firmed up the ride on my 87 f150 in the corners (we don't have beggar all straight roads out here) .

92 and up will need adjustment at speedo in cab its all electric . There are few write ups on here .