lt1camaroman93

I am looking to put a 315/60/15 bfg on my car next year. I know i could get away with a 28" tire but i want the look of a 29.8. I know there will be a lot of banging and cutting, but has anyone got a tire that large in the wheel well without moving the control arms or springs. That would just get way to expensive. I might be moving the spring anyways if i get the rear coil over kit. Thanks for the help guys.

n20ta2

I just bought a set of the new e/t street radials in a 325 50 15 and they barely fit,I dont think you can squeeze a 29.8 almost 30 inch tire without fender well mods like cutting weel lip and enlarging fender opening.My new tires are 1/4 inch away from rubbing my controll arms as well as rubbing upper wheel well.I used a hammer and dolly extensivly to fit this tire ,so look into some serious work for the 29.8.As a side note the tire I bought offers some serious grip and completly fills the wheel well

lt1camaroman93

I've had a 28" drag radial on the car before. I don't mind cutting the wheel wells and lip, i just don't want to have to move suspenssion parts. The lca's are what im worried about.

n20ta2

If you have a rim that will allow the tire to tuck under the wheel well lip it will rub the LCA's with that size tire.mine are 13.5 inches wide and just miss and I beleive the 315/60 is even wider.

lt1camaroman93

I belive the section width on the 325 is 13" and the 315 is 13.4" so i am gussing i will be lucky as heck to have it not rub? What lower control arms do you have? I have the bmr tubular ones.

Injuneer

I run a 13.1" wide ET Drag 28x10.5-15W. These are on 15x10 7.5" BS wheels. There was no interference with the Spohn tubular LCA's, and when I first mounted the ET Drags, I has the original Spohn design with the huge adjuster nut (maybe 2"?) in the middle of the LCA. The 13.1" wide tire was close to the nut, but not to the actual LCA tube. Without the adjuster nut (I upgraded to his newer design LCA and rod ends) there should be enough room for a 13.4" section width.

You can also gain about 3/4" additional clearance on the LCA's by using rod ends, and having the spacer bushings that fill in the gap between the rod ends and the bracket (3/4" on each side to keep the LCA centered in the bracket), offset to move the LCA closer to the "inside" edge of the brackets.

The inner fenders took the usual pounding, but I had already hammered those for 315/35-17's. I can't see any other interferences with the suspension. You will have to do major body work to the sheet metal wheel opening/fender and to the rear bumper cover. With a tire that's only supposed to be 28.1" diameter, I've moved the axle back to increase clearance to the metal at the front of the wheel opening, and taken about 1.5" off the rubber bumper cover. A buddy of mine put 29.5" ET Drags on his 30th SS, and it took two trips to the body shop and major fender and bumper cover surgery to eliminate all the contact points, particularly due to tire growth at 160MPH trap speeds.

You can't see much in the way of clearance in this photo, but you can see the size of the adjuster nut on the Spohn LCA's.

http://cjcfo.fbody.com/members/injun.../DCP03674a.jpg

lt1camaroman93

I was sure that i would have to have the sheet metal cut to fit the tires. I am hoping that they wont grow as much as a slick due to the stiffer side wall and that i don't trap 160. Thank you guys for all of your help, I hope you have all had a good holliday no matter what you celabrate.