18x8 front, 5" bs with a 255/40 tire. 18x9 rears with 5.25"bs and 275/40 tires. Going to drop back to a 245 on the front though to give myself a little extra room. I love the 255 but honestly it's a tad big for it.
Have you done any mods to the suspension or body to get those tires to fit? Also is there any wiggle room in the suspension with those rims and tires. DO you have anymore pics or your ride ? Michael
Also are those rims and tires on the 66=67 in your pic or are they on a different ride because in your profile you also have a pic of a later car like a 70-71. OPPS!! Looks like I should of gone back a page to see the last few posts of yours/ Michael
all I did to the rear was roll the outer fender lip for clearance. Inside is fine. The front hasn't had a thing done to it other than removing the top inner fender bolt where it bolts to the fender lip. I've got southside lowers and adjustable UMI uppers in the rear with a 1" drop spring, tubular upper and lower up front with 2" springs. Put my 1" Spohn sway bar on the rear last night and will do the 1 5/16 front tonight if nothing comes up. It will end up with air ride at some point. The other car you see in the pics with big tires is my 70 Camaro. It's all hotchkis underneath and has billet specialties wheels. I run more rear tire on the Camaro because it has the room. Going to go down to a 245/40 on the front of the Buick though. The 255 looks cool but the 245 is a better choice for overall driving and cornering. Here's my garage this weekend. I had to clean the shop out for a party so all the "cool" cars got parked in the three car attached to my house!
. great looking gs you have Gabe im going with circle racing billet 104 series buick rally wheel 17x9.5 on rear and 17x8 0n front . Hello Gabe please share your experience as you have first hand knowledge it seems.... I have a 70gs with Hotchkis stage 2 suspension kit (1) inch drop all around And have to go to a bigger rally wheel because of CCPC5 Corvette brake kit I’m installing.. Do you think I will have any clearance issues I know it depends on the tire also I want the biggest fattest tire I can fit without rubbing I guess that’s what everybody’s trying to accomplish.... the wheels are special order and once I buy them they’re mine I’m sure it was the same when you bought yours I really need some help here I don’t wanna make a mistake anybody else who has experience please chime in and also thank you
87 GN ....Yeah they are up there..$$$. but they’re the only decent Buick rally out there that fit over big disk brakes ..... that look good to me .i see you have 18x11 on your gs is it mini tubed or ? Do they fix with out modification ? Please let me know I can’t.buy till I know
No, not mini tubbed. I had to trim the fender lips. Car sits about stock ride height. It's tight with 295 but they fit. I have about 1/2 in clearance in and out. Rear wheels have 1/4 in offset. 18 x 9.5 would fit with more clearance, especially with a lowered car, and 295's really need a 10" wheel but should fit on a 9.5
A 9.5" wide wheel needs a minimum of 5.25" Back spacing. The 11" wide wheel will need 6" back spacing. That would be 0 offset for each wheel. I don't see how any of those pictured wheels will work. The bigger ones have 5" BS
Thanks guys .. Larry can you suggest the best back set and rim width ? 70 gs C5 corvette brakes..cccp suggests min 0f 17 inch rim I’m going to a 18 inch to be safe please share your thoughts I cannot afford to make a mistake these rims are not returnable thank you
I want to run the wheels in the photos I posted above ... would like to have as much rubber on the road as I can without rubbing and would like to be on the safe side of no rub my 70”gs has a one inch suspension drop all around and for sure I need 18 inch wheel.. for brake clearance... I honestly don’t know what size tire that’s why am here poking around hoping to get some input from people who’ve already been there it seems that multiple members have I’ve got a pretty stout engine and trans arriving soon And have the body off the car it’s just hard to tell with the car in 2 pieces I am all ears if you guys have ideas Thanks
Here is the problem. When you want to run a wheel that wide, that is very close to the limit of what you can run with stock wheel wells. It is very common for the body to not sit square on the frame. This means you may have more room on one side than the other. No one can predict that. Those wheels that you posted don't have enough back spacing. Unless you can custom order the back spacing, they are a non starter IMO. The actual wheel diameter has no bearing on whether they will fit. It's the width and back spacing that you need to get right, the width to run the tire you want, and the back spacing to center it in the wheel well. I suggest you mount your current wheels and carefully measure the back spacing. Then measure how much clearance you have now. That way, you'll have some idea of what will fit on your car. Somewhere on V8, I remember a poster making a tool out of wood that allowed him to measure his clearances.
Thanks Larry for your detailed response ... the body is off the frame .. i will wait to buy the rims .... please.. if any others on the board use the circle racing # 104 buck wheel please post wheel tire and back set info thanks to all for your posts
That probably was me: http://www.v8buick.com/index.php?threads/pictures-of-275-60-15-on-7-rims.340212/page-2#post-2879873
My car, a 70, needed more backspacing than zero offset gives, with the Circle Racing 104 wheels and a 295 tire. For a fit that will give you more clearance than what I have, and especially if its lowered, I would recommend 18 x 9.5 with 5.5" backspacing and 285/40/18 (or 295/40/18) rear. If you decide to go 11", 6.25" bs. Fronts can be 17 x 7 (4 or 4.25" bs) or 17 x 8 (4.5 or 4.75" bs) with a 245/50/17 or 255/45/17. My vote is 17 x 8, 4.75" bs 255/45/17 front.
