Does anyone run 39"+ tires on leaf springs?

[TheDurtyDeez]

Does anyone run 39" tires or bigger on a leaf spring super duty (99-04)? I am looking to get a set and put them on 20x10 rims with 4.5 backspace and -25 offset. I will have a 4 inch lift and cut outs to make them fit. I would like 39s or 41s. Also how wide are the tires you run? TIA!

[HunterJ]

You might need more backspace but I really don't know.

[LHMissions]

Talk to Tank! I think he's got 41's on 4.5 lift! Not sure if leafs or coils though.

[Raul@Stealth Automotive]

Originally Posted by TheDurtyDeez

Does anyone run 39" tires or bigger on a leaf spring super duty (99-04)? I am looking to get a set and put them on 20x10 rims with 4.5 backspace and -25 offset. I will have a 4 inch lift and cut outs to make them fit. I would like 39s or 41s. Also how wide are the tires you run? TIA!

no matter what you do your gonna rub the leafs at full lock.... with a 10 wide wheel i would get 13.5 wide tire....

also dont forget to regear your truck... depending on what your setting up the truck to do will determine what gears you should get.... also dont forget about your brakes.... you will have a lot more rotating mass and it will take you longer to stop with stock brakes... i recommend SS braided lines, and upgrade your rotors and pads to powerstlots or Frozenrotors...

-Raul

[Marty]

Raul got it covered.

Raul - you carry the stainless steel brake lines?

[Raul@Stealth Automotive]

Originally Posted by Maintain

Raul got it covered.

Raul - you carry the stainless steel brake lines?

yes sir i do... i can tell you they work... i def felt a diff when i installed mine

[bigwhite7.3stroker]

SS brake lines are the only way to go great upgrade and with larger tires you can definately tell a difference

[TheDurtyDeez]

I plan on gettin my brakes from you Raul... won't need new ones till spring (when lift and tires go on) and I didn't know about the extended brake lines! How do they make a diff. besides the extra length obviously? I am thinking about 456 or 488 gears. I plan on doin stage 3s and a modded h2e down th road so I figure gearing lower will be safer to handle that power... am I correct on that thinking?


Also is there any way to avoid rubbing? Or just no way to avoid it with my wheel choice?

[jhaddox]

Originally Posted by LHMissions

Talk to Tank! I think he's got 41's on 4.5 lift! Not sure if leafs or coils though.

tank has an 05 he has coils in the front

[Raul@Stealth Automotive]

Originally Posted by TheDurtyDeez

I plan on gettin my brakes from you Raul... won't need new ones till spring (when lift and tires go on) and I didn't know about the extended brake lines! How do they make a diff. besides the extra length obviously? I am thinking about 456 or 488 gears. I plan on doin stage 3s and a modded h2e down th road so I figure gearing lower will be safer to handle that power... am I correct on that thinking?


Also is there any way to avoid rubbing? Or just no way to avoid it with my wheel choice?

if your going 40's i would go with 4.88's

i have never heard of anyone with leafs never rubbing with only a 4" lift and 40's... i think you just learn not to turn the wheel all the way like me lol...

the reason the brake lines make a diff is because under heavy load the stockers will bulge when you apply the brakes which provides you with less braking power... when you upgrade to SS they dont bulb which will get you better stopping power...