sorry if this has been asked..does anyone have 35" tires (or bigger) with a V6? If so, does it move ok? Any info on this is appreciated..thanks!

 

It depends on your current setup, which you describe. If you have currently have 255/70/16 tire with a 3.55 rear end, then going to 35" tire will give you an effect gear ratio of approx 3.00. That's probably too tall for anyone's liking. If you currently have a 3.08 rear end, then your effective gear ratio would become approximately 2.60. I think most people on this board will tell you that you should go with 4.10 rear end.

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1999 XLT SC, bright red, 4.2l, 5 speed, MAAP stainless nerfs, Prime Designs bug deflector, Astro Euro-Lid II, Mobil 1.

 

Oops, I should have said "which you didn't describe". Sorry.

 

I have 35's on a V6. I also have the 3.55 rear end. It moves ok, Maybe a little slow out the hole but that should get better once I put the 4.56's in the rear end.

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[This message has been edited by ccla (edited 06-05-2000).]

 

Hey mtucker, how exactly do you do the math for configuring the gear ratio that you need if you switch to a new tire size? Is there a formula?

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1997 Ford F-150 XLT 4x4 extended cab short bed
Options: Off Road package, Towing package, 4.6L V8, Captain's chairs, LS rear axle, green with two tone tan
Modifications: Westin Brushguard
Pioneer Premier cassette receiver with 6-disc CD changer
Goodyear Wrangler AT/S
Future mods: Superchip
Nerf bars(Manik or Warn)
Spray-in-bedliner
KC Daylighters
Winch(Ramsey or Warn)with hidden mount
Trailmaster 4" Lift Kit
35" BFGoodrich tires
Dual exhaust(Borla or K&N)
Next Generation K&N II Kit
Custom hood with air intake
Seat covers(water proof)

 

You take the ratio of the old and new tire size (height) and multiply that by the gear ratio. That will give you an effective gear ratio. For example, the 255/70/16 tire is approx. 30 inches tall. The ratio of this to a 35 inch tire is .86. Multiply that with a rear end gear ratio of 3.55 and you get an effective gear ratio of 3.04.

A good rule of thumb is: for every inch you gain in tire height, subtract .10 from you gear ratio. Using the previous example, the effective would be 3.05. Pretty close!

Regards,

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1999 XLT SC, bright red, 4.2l, 5 speed, MAAP stainless nerfs, Prime Designs bug deflector, Astro Euro-Lid II, Mobil 1.

 

That's pretty cool! Thanks for the information. It will come in handy when I swith over to 35" tires.

------------------
1997 Ford F-150 XLT 4x4 extended cab short bed
Options: Off Road package, Towing package, 4.6L V8, Captain's chairs, LS rear axle, green with two tone tan
Modifications: Westin Brushguard
Pioneer Premier cassette receiver with 6-disc CD changer
Goodyear Wrangler AT/S
Future mods: Superchip
Nerf bars(Manik or Warn)
Spray-in-bedliner
KC Daylighters
Winch(Ramsey or Warn)with hidden mount
Trailmaster 4" Lift Kit
35" BFGoodrich tires
Dual exhaust(Borla or K&N)
Next Generation K&N II Kit
Custom hood with air intake
Seat covers(water proof)