Suspension and tires
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Senior User
Joined: Jan 2002
Posts: 161
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Suspension and tires
I have a '79 F150 4x4 with 15" wheels and the stock suspension. I have done the measurements around the tire well and it looks like I can safely use a 31x10.5 tire, definitely a 30x10.5 would work but does anyone have the same truck and has used the 31x10.5's?? Also, was it an option to have dual front shocks? I can't remember seeing it on other 1/2 ton's, anyone know? Thanks!
JD
JD
Mountain Pass
Joined: Jul 2000
Posts: 189
Likes: 12
From: Minnesota
Suspension and tires
I had a 79 with 31 x 10.50 x 15 on it and had no problems at all. I didn't have a lift either, it was stock. I ended up having to get a wider wheel though. I believe you need at least an 8 inch wide wheel to run that size tire.
New User
Joined: Feb 2002
Posts: 10
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From: Burbank USA
Suspension and tires
I've been running Winston Fun and Mud 31"/11.5 /15 with an 8" wheel since 1978 with no problem. Did try a 32" once and chewed up wheel wells in front when off road. But I swear by these Winstons, and they are the only ones I have found who offer a 31" 11.5. Just make sure your front springs are in good condition and don't sag. I did have to replace the front springs after about 20 years.
78F150
Burbank, Ca
78F150
Burbank, Ca
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Senior User
Joined: Apr 2002
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From: lake ariel usa
Suspension and tires
you could put 33s on it if the springs arent shot from plowing etc even the 31s look great if you can get ahold of some 10 inch wheels
ANDY
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New User
Joined: Apr 2002
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Suspension and tires
I run 31/10.5/15 on 7 inch factory wheels on my 78 Bronco... which is the same as your pickup down there. I replaced the front springs with HD springs years ago, which forced me to lift the rear about 2". I have no problems at all.
