Great write up! im looking into some KM685 DISTRICT wheels. 20x8.5 in the front and 20x10.5 in the rear. seems like the fronts will fit fine. Do you think the rears will fit with an offset of 45 and tires of 275/30 20 and rolled fenders? or would i have to stretch the fenders out or stance it a bit?
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FWIW The first set of Bridgestone Potenza RE970 AS Pole-Position 285/30/20 that I had on my 20x10s in the back looked too narrow for the wheel. The Michelins I have now in my signature (same size) are perfect. 275 on a 10.5 would look horrible IMO. :/ Also FWIW, I had to roll and stretch my fenders and also cut the fender joint back behind the wheel for it to not rub with stock suspension. I only have a +35 offset though.Originally Posted by BAdley13
"Elvira" aka "Red Nasty": 2008 Liquid Red G8 GT - Mustang Dyno before several mods: 376rwhp, 384 lb-ft tq - PowerBond 25% UDP, Modified Spectre/Rotofab CAI, LS7 MAF, tb ported by Yours Truly, Taylor Thundervolt wires, Kooks 1 7/8" LTs, Solo HFCs, QTP e-cutouts, Solo Mach Shorty, Camaro SS Deep Sump Trans Pan, Norris Motorsports Catch Can, TUNED by PAT G, Brembo GXP Front Brake Kit w/ StopTech Street Performance pads, Gunmetal TSW Nurburgrings 20x8.5 +43 front and 20x10 +35 rear, 255/35/20 BF Goodrich G-Force Sport Comp 2 and 285/30/20 Michelin Pilot Sport A/S+, rolled and pulled rear fenders with fender-bumper joints shaved, GXP rear struts, BMR rear end links, BMR Differential Bushings, "G8 GT 6.0 Liter" Trunk Badge, "L76 6.0" Sideskirt Badges, Black Painted Accents , GXP Rear Diffuser, Bohnman Chin Splitter, Lloyd Rubbertite Floormats.
Offset is too high, some need small spacers to fit V fronts properly on the front 19x9" +51et.
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Do you guys think that a 20x8.5 et35 will clear 4 pot Brembo's?
Largely depends on the design of the wheel and how the spokes form out to the barrel. Nothing wrong with the size of the wheel of the offsets however.
2015 White Hot Chevy SS - Sunroof/Spare/Stick - BTR Stage 3 cam, headers, intake *Traded 11/11/2023*
2018 GMC Sierra Denali 1500 - 6.2L, Ultimate Pack *Turned in 4/13/2021*
2016 Jungle Green Metallic Chevy SS - Sunroof/Spare/Stick *Traded 2/1/18*
2011 Radiant Silver Metallic CTS-V Wagon - Corsa Axleback, AirAid Intake *Traded 7/7/16*
2008 Panther Black Metallic G8 GT * Sold 6/10/14*
Yeah, I'll have to see how far the caliper sticks out from the hub. It's these wheels:
http://www.aspiremotoring.com/produc...hXpRoCqgPw_wcB
Thinking about it now, it seems obvious. The spokes could bend/attach to the wheel at any angle/point.
First and foremost I've been running calculations and searching my butt off.
Is there enough room inside the rear wheel wells for a 28" tire? The car will be on coilovers so the height will be adjustable.
I want 295/35r20's on the rear. I know they are way bigger then factory. The car is tuned and I can compensate.
According the the specs at the beginning of this page someone tucked 295/30r20 on a +60 offset wheel. According to the tire/wheel calculators I have been abusing a 295/35r20 on a +50 offset will have more room between the tire and suspension then the +60 obviously. And it should be alright on the outside as well. Ran a comparison against my old Breyton set up 275/30r20 on a +35 offset. Rubbed over bumps at stock height with no rolling. The 295/35 on +50 would be tucked in an extra 5mm according to the calculator.
I will roll the quarter lip if I have too. I will also cut the bumper bracket if needed. I'm confident that width wise the tire will fit. But what about the overall height? Is there physically enough room in the wheel well?
I also plan on doing the Camaro rear cradle swap which I believe is supposed to pull the wheels in an additional 3mm on each side. Can anyone verify this? I don't see why an additional 3mm would make it rub on the inside. Running a calculation for the additional offset still shows it has more room then the +60.
Thanks in advance for taking the time to read this. And I'd appreciate if we could steer away from the "just run a 30 series tire" comments. I hate small sidewalls. These cars look great with larger wheels. I just need a taller tire to go with them to avoid the rubber band look.
People run 28" drag race tires all the time. They will fit with the right combination of width and offset. You will need a roll. Also some suspension work to keep the tire off of the front of the wheelwell.
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Off the front of the wheel well? Could you elaborate? Is it something that could be adjusted out with adjustable suspension parts?
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