Performance with 35" tires? - Ford Powerstroke Diesel Forum

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post #1 of 7 Old 10-23-2010, 10:31 PM Thread Starter
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Performance with 35" tires?

For those of you that have upgraded to an actual 35" diameter tire or slightly taller, did you notice a difference in performance?

If so, explain with current gearing configuration.....

Myself, I have stock 20" wheels with Michelin LT275/65R20E tires, which I believe are 34" tires. I'll be installing a 4.5" lift and will most likely install the GY, Duratrac 325/60r20 tires, which comes out to 35.4".
Rear end: 355

I like the feel of the current configuration, should I expect to be somewhat disappointed after the increase is size?

Thanks,
Blair
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post #2 of 7 Old 10-23-2010, 10:43 PM
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You will sadly notice a bit of a decrease in power. What yr is your truck? Are you running a manual or auto?

You wont notice to much as your going only an inch bigger but with bigger size your gaining wieght and size. Find some parted out 3.73's. just be sure there in good shape. Should like it alot. and watch your pinion in the rear especially for leaks.
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post #3 of 7 Old 10-24-2010, 03:19 AM Thread Starter
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Well, considering that this is in the 6.7L forum, I hope it's a 2011..lol

It's a 2011 6.7L Auto

Last edited by Bavanew; 10-24-2010 at 08:27 AM.
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post #4 of 7 Old 10-24-2010, 01:09 PM
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You will suffer a little in the MPG department partly due to the width of your new tires and more dreg of a taller truck.In the performance dept.these things has so much low-end tq,It'll be pretty close to running your stock 20s with a 3.31 rear-end.

2011 F350 Lariat,6.7,3.55, crew cab, FX4, longbed w/custom Reese 5th wheel hitch,white,black leather,moon roof,navigation.

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post #5 of 7 Old 10-26-2010, 08:16 AM Thread Starter
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FYI,
When doing the math conversion of the stock tires, it comes out at 34" tall.
However, when I went to the Michelin website, the tires are actually 34.4".
If that's accurate, then there should be very little difference going to a 35" tire, except for the width of course.
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post #6 of 7 Old 10-27-2010, 12:30 AM
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hope its not a thread jack, but...

What is a good rear end with 35"-37" tires when towing <6000lb trailers, empty running, and a little in town driving. I'm more concerned with the quality of towing, and mpg then the seat of the pants power.

Thanks ^^b
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post #7 of 7 Old 10-29-2010, 07:28 AM
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You'll notice a slight drop in MPG and a stiffer ride. Their will also be sum humming depending on what you get(A/T vs M/T). Better traction and appearance will be gained.
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