C30 DRW, what size tires???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

coops714x4 · 01-20-2012, 05:36 PM

Ok you 1 ton guys, what size tires do you run on the duals. I want to get as tall a tire as I can without them rubbing. I have 1 piece wheels off of a 80 chevy they are prob 7 or 8 inches wide.. the tire shops around here keep telling me different things and I don't really know sizes that well. Coop

rray670 · 01-20-2012, 09:40 PM

235-85-16 is the biggest tire you will be able to run without them rubbing each other without a spacer. These will actually kiss each other if you overload real heavy, but for normal use they will be fine.

no moa · 01-20-2012, 09:43 PM

I'll have to double check, but I think mine on the wrecker are 235/75/16
Posted via Mobile Device

coops714x4 · 01-21-2012, 12:42 AM

thanks, can someone explain these dang metric tire sizes to me? the first number is millimeters wide ? and the second is height, but I know its not millimeters. and the third is wheel size in inches, so what is the unit of measure for the height?? Coop<

Meatman · 01-21-2012, 01:52 AM

Quote:

Originally Posted by rray670

235-85-16 is the biggest tire you will be able to run without them rubbing each other without a spacer. These will actually kiss each other if you overload real heavy, but for normal use they will be fine.

Yep that's thats been standard size for a daully for a long time. Tall and narrow.

**special-K** · 01-21-2012, 06:27 AM

235/85-16s are as close (if not the same) metric radial size/profile as the 7.50-16s bias plies that came on these trucks. 85 series is the taller/narrower profile. The higher the first number the bigger the tire. The second number determines the height to width ratio. The lower the number the shorter and wider.

coops714x4 · 01-21-2012, 11:36 AM

thanks guys that helps a lot. this is why I love this board so much, there is always someone with the knowledge to help a dummy like me. Coop

01-20-2012, 05:36 PM	#1
coops714x4 Registered User Join Date: Mar 2011 Location: Cement Oklahoma Posts: 916	C30 DRW, what size tires???? Ok you 1 ton guys, what size tires do you run on the duals. I want to get as tall a tire as I can without them rubbing. I have 1 piece wheels off of a 80 chevy they are prob 7 or 8 inches wide.. the tire shops around here keep telling me different things and I don't really know sizes that well. Coop __________________ 1971 K20, Coop's beast (project) 1972 C30 wrecker, "Big Ernest" (SOLD) 1975 K5 Blazer (wife's toy) she got it in the divorce 2014 Street Glide Special 1983 K20 Big Block, auto (work horse)

01-20-2012, 09:40 PM	#2
rray670 Registered User Join Date: May 2011 Location: Little Falls, NY Posts: 27	Re: C30 DRW, what size tires???? 235-85-16 is the biggest tire you will be able to run without them rubbing each other without a spacer. These will actually kiss each other if you overload real heavy, but for normal use they will be fine.

01-20-2012, 09:43 PM	#3
no moa Registered User Join Date: Nov 2009 Location: maine Posts: 2,315	Re: C30 DRW, what size tires???? I'll have to double check, but I think mine on the wrecker are 235/75/16 Posted via Mobile Device __________________ 1972 C10 Deluxe.Shortbed. 402/400. A/C, white interior, needs complete restore. Project Red, white and blue. Used to be a Longbed apperently. http://67-72chevytrucks.com/vboard/s...d.php?t=451950 1971 c10 step 250 3 OTT 1969 c30 TOW-MATER. 307 4 speed, holmes 440 body. http://67-72chevytrucks.com/vboard/s...d.php?t=451082 2006 CTS-V LS2 6spd.

01-21-2012, 12:42 AM	#4
coops714x4 Registered User Join Date: Mar 2011 Location: Cement Oklahoma Posts: 916	Re: C30 DRW, what size tires???? thanks, can someone explain these dang metric tire sizes to me? the first number is millimeters wide ? and the second is height, but I know its not millimeters. and the third is wheel size in inches, so what is the unit of measure for the height?? Coop< __________________ 1971 K20, Coop's beast (project) 1972 C30 wrecker, "Big Ernest" (SOLD) 1975 K5 Blazer (wife's toy) she got it in the divorce 2014 Street Glide Special 1983 K20 Big Block, auto (work horse)

01-21-2012, 06:27 AM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: C30 DRW, what size tires???? 235/85-16s are as close (if not the same) metric radial size/profile as the 7.50-16s bias plies that came on these trucks. 85 series is the taller/narrower profile. The higher the first number the bigger the tire. The second number determines the height to width ratio. The lower the number the shorter and wider. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

01-21-2012, 11:36 AM	#7
coops714x4 Registered User Join Date: Mar 2011 Location: Cement Oklahoma Posts: 916	Re: C30 DRW, what size tires???? thanks guys that helps a lot. this is why I love this board so much, there is always someone with the knowledge to help a dummy like me. Coop __________________ 1971 K20, Coop's beast (project) 1972 C30 wrecker, "Big Ernest" (SOLD) 1975 K5 Blazer (wife's toy) she got it in the divorce 2014 Street Glide Special 1983 K20 Big Block, auto (work horse)



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