Tires for a k-20 with 4" lift?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BLAZERMAN · 07-26-2006, 07:19 PM

I just got a 70 K-20 to use as a dailly driver and it has a 4" lift, right now it has 255 x 85 x 16s which I believe is about 33" tall.
I'm not up on all the metric sizes and that seems to be what the local tire stores have in stock, what are you guys running that are between 33" and 35" tall?
Any pics would be great.

Mudder · 07-26-2006, 08:22 PM

Almost all tires I have seen jump from 33's to 35's. If you have ever measured a 35 inch tire, or a 33 inch tire are not a true 33 or 35 inches tall. Most 35's run about 34. Some of it also depends on the width of the rims.

teeitup · 07-26-2006, 09:48 PM

Come on Rob, pics of the new ride!!!!

**special-K** · 07-26-2006, 10:16 PM

255/85s are a notch taller than 7.50x16s(235/85s).A 285/75 is about 1/2" shorter and 1-2" wider than a 255/85.Here are 285s:

**special-K** · 07-29-2006, 08:42 AM

Now that I`ve seen your new`70,drool,what size (nice truck) are on it now?
285/75s?4" lift:

BLAZERMAN · 07-30-2006, 05:15 PM

It has 255s on it now, I was wanting to go with a 315 which should be about 35" tall. Just dont know for sure how well they will fit, I have a chance to run some 305s on a trial bassis. Its just hard to get a mental picture of how big these metric sizes are but it seems like most of the stores are stocking these now.
Are those 285s pictured on the red and white truck?

nu2-72 · 07-30-2006, 05:46 PM

Rob, try here.
I have the 305's you can try.
http://www.procomptires.com/atapps.htm

**special-K** · 07-30-2006, 11:28 PM

The 305/75s are 12.50/33s,the 315/75s are 12.50/35.I think they`ll fit with 8" wheels and not rub.

vtblazer · 08-01-2006, 08:05 PM

I ran my K20 with 265/16's and they were just about right IMO.
Although that truck only had a 2" lift but you can get the idea.
They were BFG K.O.'s and had great road manners and good wear.

The 285's on my 01 measure 32" tall.

33's for a daily driver is as big as I'd go myself.

**special-K** · 08-26-2006, 09:53 AM

Quote:

Originally Posted by BLAZERMAN

It has 255s on it now, I was wanting to go with a 315 which should be about 35" tall. Just dont know for sure how well they will fit, I have a chance to run some 305s on a trial bassis. Its just hard to get a mental picture of how big these metric sizes are but it seems like most of the stores are stocking these now.
Are those 285s pictured on the red and white truck?

Sorry,been awhile.Yes,those are 285/75s & 4" lift on the red`n`white truck.For comparison,the blue`n`white one has the same size and about 2" of lift.They rub some,but shocks and springs are shot(incl.broken leafs and even a couple 1/2s missing on the rear)and those are SuperSwampers...big side lugs.
So,what did you do?You could go with 315/85s (12.50/35s) with 8" rims and mild flexing.When I bought my CheyenneSuper it had 2" lift with that combo,careful street-use only.Like any slightly too big for lift tire on these trucks,you had to watch turning in and going up at the same time.Sure looks best,though

.

07-26-2006, 07:19 PM	#1
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,826	Tires for a k-20 with 4" lift?? I just got a 70 K-20 to use as a dailly driver and it has a 4" lift, right now it has 255 x 85 x 16s which I believe is about 33" tall. I'm not up on all the metric sizes and that seems to be what the local tire stores have in stock, what are you guys running that are between 33" and 35" tall? Any pics would be great. __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C

07-26-2006, 08:22 PM	#2
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Re: Tires for a k-20 with 4" lift?? Almost all tires I have seen jump from 33's to 35's. If you have ever measured a 35 inch tire, or a 33 inch tire are not a true 33 or 35 inches tall. Most 35's run about 34. Some of it also depends on the width of the rims. Last edited by Mudder; 07-26-2006 at 08:22 PM.

07-26-2006, 09:48 PM	#3
teeitup Just like to part out trucks!! Join Date: Nov 2001 Location: Meriden, Ks-North of Topeka 10 miles Posts: 27,396	Re: Tires for a k-20 with 4" lift?? Come on Rob, pics of the new ride!!!! __________________ 67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure"

07-26-2006, 10:16 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: Tires for a k-20 with 4" lift?? 255/85s are a notch taller than 7.50x16s(235/85s).A 285/75 is about 1/2" shorter and 1-2" wider than a 255/85.Here are 285s: __________________ "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 ~

07-29-2006, 08:42 AM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: Tires for a k-20 with 4" lift?? Now that I`ve seen your new`70,drool,what size (nice truck) are on it now? 285/75s?4" lift: __________________ "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 ~

07-30-2006, 05:15 PM	#6
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,826	Re: Tires for a k-20 with 4" lift?? It has 255s on it now, I was wanting to go with a 315 which should be about 35" tall. Just dont know for sure how well they will fit, I have a chance to run some 305s on a trial bassis. Its just hard to get a mental picture of how big these metric sizes are but it seems like most of the stores are stocking these now. Are those 285s pictured on the red and white truck? __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C Last edited by BLAZERMAN; 07-31-2006 at 05:06 PM.

07-30-2006, 05:46 PM	#7
nu2-72 Senior Member Join Date: Apr 2001 Location: Amazonia, Mo. USA Posts: 2,821	Re: Tires for a k-20 with 4" lift?? Rob, try here. I have the 305's you can try. http://www.procomptires.com/atapps.htm __________________ 72 3/4 4x4 350 4spd 72 3/4 4x4 350 auto 2004 Duramax Silverado 4x4 2006 Duramax Crew cab 4x4 2010 Harley Ultra Limited 2011 Harley Street Glide

07-30-2006, 11:28 PM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: Tires for a k-20 with 4" lift?? The 305/75s are 12.50/33s,the 315/75s are 12.50/35.I think they`ll fit with 8" wheels and not rub. __________________ "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 ~

08-01-2006, 08:05 PM	#9
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,538	Re: Tires for a k-20 with 4" lift?? I ran my K20 with 265/16's and they were just about right IMO. Although that truck only had a 2" lift but you can get the idea. They were BFG K.O.'s and had great road manners and good wear. The 285's on my 01 measure 32" tall. 33's for a daily driver is as big as I'd go myself. Attached Images Last edited by vtblazer; 08-01-2006 at 08:09 PM.



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