Tires for Rohana RC7 f 20x9 +20, r 20x10 +25 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JWade · 12-31-2018, 05:31 PM

Used factory tire sizes originally, 245/45 and 275/40, but would like to go wider with the next set of tires, which I will be needing soon. Also considering lowering springs, probably just an 1” to 1.25” BMR or similar.

Any experience with whether a 295 or 305 would work for the rear taking the +25 offset into account? The wheel looks to sit pretty flush at stock height.

Likely go with a 275 for the front.

Thanks in advance.

fly2hip8 · 12-31-2018, 07:37 PM

305 is doable, however it is a little wide for a 20x10.

295 would be better. But, the tire hight difference between the front and rear might be too much and throw codes.

1JEWLDSSRS · 01-01-2019, 01:41 PM

I had 275/40/20 on the front on my 9's and 315/35/20 on my 10 inch rears, not sure what the offset was but they were American Racing VN805 BLVD's. You could look those up to see. The fronts were just inside the fenderwell and the rears were a tad inside the fenders and I am lowered 1.25. Good luck sir.

JWade · 01-01-2019, 10:04 PM

Quote:

Originally Posted by 1JEWLDSSRS

I had 275/40/20 on the front on my 9's and 315/35/20 on my 10 inch rears, not sure what the offset was but they were American Racing VN805 BLVD's. You could look those up to see. The fronts were just inside the fenderwell and the rears were a tad inside the fenders and I am lowered 1.25. Good luck sir.

Thanks, yes that helps. Looks like your offset on the 10 inch wheel was +38. If I did my conversions and geometry correct, I think that translates into your 315’s having right at 4.8” of tire from the mounting face of the wheel to the fender side of the rim. With my offset, that means I could likely do a 295, but it would be pushed out another 0.1 inch as compared to yours.

SSkat · 01-02-2019, 10:54 AM

I am running the same size wheel with almost the same offsets. I have 275/40 and 315/35. I am not lowered but from what ive researched you should be fine with a 1" spring.

12-31-2018, 05:31 PM	#1
JWade Drives: 2014 Camaro SS/RS, L99 Join Date: Feb 2011 Location: Katy, Texas Posts: 37	Tires for Rohana RC7 f 20x9 +20, r 20x10 +25 Used factory tire sizes originally, 245/45 and 275/40, but would like to go wider with the next set of tires, which I will be needing soon. Also considering lowering springs, probably just an 1” to 1.25” BMR or similar. Any experience with whether a 295 or 305 would work for the rear taking the +25 offset into account? The wheel looks to sit pretty flush at stock height. Likely go with a 275 for the front. Thanks in advance. __________________ 2014 Camaro SS, L99 MBRP catback, CAI cai, Stainless Power LTs HFCs, tuned by KP Racing, Rohana RC7's, Z28 spoiler. Last edited by JWade; 12-31-2018 at 10:07 PM. Reason: Offset is the primary concern

01-01-2019, 01:41 PM	#3
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 14,292	I had 275/40/20 on the front on my 9's and 315/35/20 on my 10 inch rears, not sure what the offset was but they were American Racing VN805 BLVD's. You could look those up to see. The fronts were just inside the fenderwell and the rears were a tad inside the fenders and I am lowered 1.25. Good luck sir. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

12-31-2018, 07:37 PM	#2
fly2hip8 Drives: 2013 Camaro 2SS Join Date: Aug 2013 Location: Kansas Posts: 342	305 is doable, however it is a little wide for a 20x10. 295 would be better. But, the tire hight difference between the front and rear might be too much and throw codes.

01-02-2019, 10:54 AM	#5
SSkat Drives: 2010 Camaro 2SS Join Date: Mar 2018 Location: Pensacola, FL Posts: 268	I am running the same size wheel with almost the same offsets. I have 275/40 and 315/35. I am not lowered but from what ive researched you should be fine with a 1" spring.