Help! on Tire sizes 1971 C10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mdeal · 08-11-2014, 10:35 PM

Ok guys, I know there are a lot of posts about this topic. I'm still finding it hard to make my decision on what tire size to go with.
I have a 1971 C10 2wd, lowered using CPP's 5" spring kit.
I have purchased Boss 338 (I know they're overdone...but I'm on a budget)
18X8 in the front and 18X9.5 for the rear.

I've been thinking about 245/45R18 for the front and 275/40R18 for the rear...
I just don't want to buy these sizes and install them and have so much fender gap I could check my brakes by sliding my head in between the fenderwell and the tire! I want to fill the fenderwell and not have them look like balloons either. I'd like the sidewall to be pretty straight(slight bow outward is ok).

Please!!! Any suggestions would be great! Pictures would be even better!!

Thanks again!

del4fun · 01-22-2015, 10:25 PM

Try this:
http://67-72chevytrucks.com/vboard/s...d.php?t=594614

del4fun · 01-22-2015, 11:00 PM

Quote:

Originally Posted by del4fun

Try this:
http://67-72chevytrucks.com/vboard/s...d.php?t=594614

If that does not work see wheel gallery!

**67 cst swb** · 01-23-2015, 12:06 PM

Those sizes seem quite short to me.
F = 26.68" tall
R = 26.66" tall

I personally would try to get up closer to 27.5" - 28" tall front tire and have at least a 1" difference front to back.
My personal preference is a 28" - 28.5" tall front tire and a 30" tall rear tire or as close to that as a guy can get anyway.
If running 15" tires... I use 225/75-15 Fronts and 265/70-15 Rears
If running 17" tires... 245/60-17 F and 275/60-17 R
If running 20" tires. 245/45-20 or 245/40-20 F and 295/45-20 R

Running 18's... look at a 255/45-18 F and a 255/55-18 or 255/60-18 R

Just my .02 cents

del4fun · 06-15-2015, 06:25 PM

67-72chevytrucks.com/vboard/showthread.php?p=7150636

08-11-2014, 10:35 PM	#1
mdeal Registered User Join Date: May 2013 Location: Statesville, NC Posts: 67	Help! on Tire sizes 1971 C10 Ok guys, I know there are a lot of posts about this topic. I'm still finding it hard to make my decision on what tire size to go with. I have a 1971 C10 2wd, lowered using CPP's 5" spring kit. I have purchased Boss 338 (I know they're overdone...but I'm on a budget) 18X8 in the front and 18X9.5 for the rear. I've been thinking about 245/45R18 for the front and 275/40R18 for the rear... I just don't want to buy these sizes and install them and have so much fender gap I could check my brakes by sliding my head in between the fenderwell and the tire! I want to fill the fenderwell and not have them look like balloons either. I'd like the sidewall to be pretty straight(slight bow outward is ok). Please!!! Any suggestions would be great! Pictures would be even better!! Thanks again! Attached Images __________________ 1971 C10 SWB 2WD Driver 350/TH400 2003 Silverado 2WD NBS EC-Daily Driver "Life is not easy for a boy named Sue."-Johnny Cash

01-22-2015, 10:25 PM	#2
del4fun Registered User Join Date: Nov 2011 Location: Vacaville, California Posts: 215	Re: Help! on Tire sizes 1971 C10 Try this: http://67-72chevytrucks.com/vboard/s...d.php?t=594614 Attached Images __________________ US ARMY RET, SUPPORT THE TROOPS 1972 Custom/10 Short Fleet 4.5/ 5 Drop Dogg Pound Customs

01-23-2015, 12:06 PM	#4
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: Help! on Tire sizes 1971 C10 Those sizes seem quite short to me. F = 26.68" tall R = 26.66" tall I personally would try to get up closer to 27.5" - 28" tall front tire and have at least a 1" difference front to back. My personal preference is a 28" - 28.5" tall front tire and a 30" tall rear tire or as close to that as a guy can get anyway. If running 15" tires... I use 225/75-15 Fronts and 265/70-15 Rears If running 17" tires... 245/60-17 F and 275/60-17 R If running 20" tires. 245/45-20 or 245/40-20 F and 295/45-20 R Running 18's... look at a 255/45-18 F and a 255/55-18 or 255/60-18 R Just my .02 cents __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White Last edited by 67 cst swb; 01-23-2015 at 12:33 PM.

06-15-2015, 06:25 PM	#5
del4fun Registered User Join Date: Nov 2011 Location: Vacaville, California Posts: 215	Re: Help! on Tire sizes 1971 C10 67-72chevytrucks.com/vboard/showthread.php?p=7150636 __________________ US ARMY RET, SUPPORT THE TROOPS 1972 Custom/10 Short Fleet 4.5/ 5 Drop Dogg Pound Customs

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