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Tire Size Question

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Old Jul 8, 2021 | 06:51 PM
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Tire Size Question

Was wondering if y'all think 31x10.5x15 will fit on my 2WD 4.9 1995 F150? I leveled the front of the truck using Moog cc824 coil springs. It currently has 235/75R15. Thanks!

 
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Old Jul 8, 2021 | 07:23 PM
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Yes, they will fit fine. You *might* get some scrub at the wheel lock when doing tight turns. I do on my '87 F150
 
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Old Jul 8, 2021 | 07:26 PM
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yes, then gears will be next, it wont be able to get out of it's own way.
 
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Old Jul 8, 2021 | 07:35 PM
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Originally Posted by torq'ta 5 8
yes, then gears will be next, it wont be able to get out of it's own way.
Depends, mine has 3.55's in it, and while I wouldn't complain if it had lower gears, it's peppy enough for what it is.
 
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Old Jul 8, 2021 | 10:45 PM
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Originally Posted by torq'ta 5 8
yes, then gears will be next, it wont be able to get out of it's own way.
What would be an appropriate gear ratio to accommodate for the bigger tires?
 
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Old Jul 9, 2021 | 05:30 AM
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5-speed=3.73
auto=4.10

 
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Old Jul 9, 2021 | 07:43 AM
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They will fit and the 3:55 gears work fine with them.
 
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Old Jul 9, 2021 | 08:32 AM
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Originally Posted by f1504x4driver
They will fit and the 3:55 gears work fine with them.
Thank you! Beautiful truck by the way!
 
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Old Jul 9, 2021 | 12:45 PM
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Do you have the center caps for the rear wheels? I think your truck looks great just like you have it. Plus it appears you have plenty of meat on the tires and I like your wheels. I am not sure the knuckle on the passenger side is like my 250 2WD but if so, I question the bigger size. Alignment might be an issue because of the 2WD passenger knuckle and maybe turning rub. I'm just not sure about the 150. Maybe someone can verify the 2WD will work.
Edit: I recently put Moog progressive springs in front and just with those and stock tires plus Bilstein shocks I can't get passenger camber in spec. . 2WD allows up to 2 degrees of camber adjustment and 4WD allows up to 4 degrees as I understand.

upper ball joint touching knuckle which allows for no more camber adjustment
 
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Old Jul 9, 2021 | 01:43 PM
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yes that size fits no problem on stock suspension. its what I have
 
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Old Jul 9, 2021 | 03:48 PM
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For a leveled 2wd F150 the 31 10.50 is the perfect size. But you may want to regear depending on the stock ratio. For the 4.9 I would want 3.55 or maybe 3.73. If it has 3.08 or worse gears it will be sluggish.




 
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Old Jul 10, 2021 | 02:47 AM
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Originally Posted by TexasGuy001
For a leveled 2wd F150 the 31 10.50 is the perfect size. But you may want to regear depending on the stock ratio. For the 4.9 I would want 3.55 or maybe 3.73. If it has 3.08 or worse gears it will be sluggish.


nice now my stock tires aren’t adequate to me no more. I want the left but I have 3.08 rip
 
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Old Jul 10, 2021 | 01:22 PM
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Originally Posted by JPIECHOC50
yes that size fits no problem on stock suspension. its what I have
Do you have any pictures of your truck?
 
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Old Jul 10, 2021 | 01:23 PM
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Originally Posted by TexasGuy001
For a leveled 2wd F150 the 31 10.50 is the perfect size. But you may want to regear depending on the stock ratio. For the 4.9 I would want 3.55 or maybe 3.73. If it has 3.08 or worse gears it will be sluggish.


Do you know what the cost of changing the gear ratio would be and what would the Pros and Cons of the gear changed? Thanks!
 
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Old Jul 10, 2021 | 01:32 PM
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Originally Posted by JoeDirtOlSon
Do you know what the cost of changing the gear ratio would be and what would the Pros and Cons of the gear changed? Thanks!
new gears; better pulling, city mileage(most likely), more rpms at speed

off the line will be good and quick.


do you have a 302 or a 300 or a 351 ? If you have a 300 you’re gonna see far more gain than 302
 
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