315's and 3.55 gears? - Ford Truck Enthusiasts Forums



315's and 3.55 gears?

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Old 08-19-2014, 03:07 PM
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315's and 3.55 gears?

Looking to get new tires for my truck soon, wanted to get an opinion on running 315/75R16 tires. I currently run 285/75R16 tires and they work well. I am a bit concerned about my towing capabilities as I do tow up to 10,000 pounds behind my truck and sometimes a 7,000 pound travel trailer (I sometimes go wheeling and to the beach as well). What is y'all's thoughts, stay with what I got or is up sizing okay?
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Old 08-19-2014, 03:30 PM
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Is it an Auto or a Manual truck?

I run the 315/75/R16 BFG All Terrains with 4.10 gears and an automatic transmission and I love it!
I have heard people who run the 3.55 with 35" tires it can be lugged down when towing heavy weight.

It also depends on what sort of power upgrades you have done. If you create enough power then I wouldn't be worried about being lugged down.
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Old 08-19-2014, 05:49 PM
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I wouldn't do it. Mine had 305's with 3.55's when I bought it and towing is not real good if its fairly stock. If its been upgraded much, you'll be smoking more yet until your rpm's get up. It's just not a good combination to tow 10k. 265's would be better for you, but I sure wouldn't go taller than the 285's. JMO of course.
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Old 08-19-2014, 08:17 PM
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NO, you will hate it.

I tow exclusively with my truck and it is 4.10 and 315s. I could not even begin to imagine towing with 3.55s
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Old 08-19-2014, 08:31 PM
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Brad or you running 315 on stock width wheels ?
Cause on the stock steels I was wearing out the centers on 315's at 35psi
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Old 08-19-2014, 11:46 PM
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If the truck is an auto with out mods to motor or tranny do not do it, you'll regret it.. I had an automatic 97 cclb w 35's and 3.55s and it hated towing, great unloaded on the highway but absolutely the worst combo for towing.. Like 427 said 265s would be the best for your setup... If if you have a stick you might able to get away w 33s but even at that you'd still be pretty tall...
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Old 08-20-2014, 04:21 AM
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Originally Posted by fordpride View Post
Brad or you running 315 on stock width wheels ?
Cause on the stock steels I was wearing out the centers on 315's at 35psi
When it was a dually, yes
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Old 08-20-2014, 08:20 AM
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Im running 4.10's with 325 tires which are basically 35-36" tires. Its pushing it, 315 may be better for me, couldnt imagine 3.55 gears tho
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Old 08-20-2014, 11:18 AM
TexasDiesel97 TexasDiesel97 is offline
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Well my truck is an auto, it has a stage 2 rebuild from Marshall engines. I have a tw chip, 6637 intake and a 3"dp to 4" exhaust. I suspect y'all are right and I prolly will just stick to 285's till I can do a front axel swap and 4.10 gears.
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Old 08-20-2014, 12:30 PM
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Since we are on the topic of 35's, I have been trying to find a 35x10.50 for a long time...the only one I think out there is an INterco SSR and no way in hell will that work. Anybody able to find anything close? Currently on 285's and would like to go up a size, I simply don't want a 12.50.
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Old 08-20-2014, 01:00 PM
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Quote:
Originally Posted by nossliw View Post
Since we are on the topic of 35's, I have been trying to find a 35x10.50 for a long time...the only one I think out there is an INterco SSR and no way in hell will that work. Anybody able to find anything close? Currently on 285's and would like to go up a size, I simply don't want a 12.50.
Do you have 16" or 16.5" rims?
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Old 08-20-2014, 01:01 PM
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Quote:
Originally Posted by nossliw View Post
Since we are on the topic of 35's, I have been trying to find a 35x10.50 for a long time...the only one I think out there is an INterco SSR and no way in hell will that work. Anybody able to find anything close? Currently on 285's and would like to go up a size, I simply don't want a 12.50.
I dont know any off the top of my head, they def are not that common. A 35x10.50 is a tall skinny tire. i know when they start getting taller there also designed wider to spread that much volume and load on more surface area esp with us being 3/4 ton and bigger.
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Old 08-20-2014, 01:02 PM
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Originally Posted by coreyallan01 View Post
Do you have 16" or 16.5" rims?
I have 16's
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Old 08-20-2014, 01:13 PM
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Originally Posted by nossliw View Post
I have 16's
Coker has some narrow stuff, I'm not sure if any are radials tho...
Coker Tire - Buy Vintage Tires and Wheels
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Old 08-20-2014, 01:19 PM
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hmmm. Looks like I'll be sticking to 12.50s :-) at least to get a 10ply
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