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#1 |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Tallest tires on a stock C30?
I have a stock height 1979 C30 with 4.56 gears in the rear end. Trying to tame those gears a little bit, I think bigger tires would be nice. What is the biggest tire I can put on a stock, unlifted truck? Right now I think it has 31"...
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#2 |
6.0 powered square
Join Date: Feb 2008
Location: Mesquite texas
Posts: 3,459
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Re: Tallest tires on a stock C30?
32" will fit
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Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326 |
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#3 |
Senior Member
Join Date: May 2004
Location: Caldwell,Tx.
Posts: 3,648
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Re: Tallest tires on a stock C30?
Remington makes a 255/85/16 and it is about 33 inches tall . Nice tire if you are running stock wheels and want a nice tire to tame that gear .
Frank
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Born and proudly residing in a Red State ! |
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#4 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,454
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Re: Tallest tires on a stock C30?
33s will fit fine. If you don't mind the woodchuck look, 39s will probly fit too!!!! lol
Buddy has 265/75s on his 3/4 ton 2 wheeler.
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#5 |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: Tallest tires on a stock C30?
Alright, what I got now is 235/85R16 which works out to 31.7". Do you think switching to 33s would really make much difference in how the gearing feels? I could always swap over to 4.11s too, but I already need new tires...
It's hard to tell since I don't have a tach, but as it is now I think about 65mph is my top speed in 4th, LOL. I wanted a work truck but not a semi truck! ![]() |
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#6 |
Junior Member
![]() Join Date: Sep 2005
Location: Fresno,California
Posts: 224
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Re: Tallest tires on a stock C30?
Try this:http://www.ringpinion.com/Calc_RPM.aspx
It is a RPM calculator. It is kind of fun to try different values................Flat67 Last edited by Flat 67; 09-06-2009 at 01:19 AM. |
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#7 | |
Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: Tallest tires on a stock C30?
Quote:
![]() Doesn't look like changing the tire size will help much...I'm starting to lean towards...I can't say it....OVERDRIVE! ![]() |
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