3100 AD max tire size in rear? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DENALI · 12-22-2013, 01:48 PM

What size/width 19" wheel/tire combo can I get in the rear fenders of a 47-54 3100 without mini tubbing? Thanks

solidaxel · 12-22-2013, 02:01 PM

I run 255 75 15 on all my trucks, no tubs, Camaro axle, Monte Carlo, Regal type may be 1" narrower

torchlight · 12-22-2013, 02:49 PM

I'm running 15x8 inch wheels in the back and the tires are 255/70r15 and I don't think you could go any wider than that without tubs.

**oldman3** · 12-22-2013, 05:21 PM

I'm running a 235/55/17 tire on a 17"X8" rim with a 3-1/2" BS. The rear axle is a 74 nova and is 60" from mounting surface to mounting surface. The bed on these pickups is 50" wide, you have approx. 12" from bed to inside lip of rear fender, for a total of 74". The section width on my tire is 9.5" and I have no rubbing problems. When I was checking on mine the widest section width I could go was 10.4" with only 1/2" clearance to hitting the bed. That tire was a 255/50/17....Jim

Old Crow · 12-23-2013, 04:40 PM

Back in the day I ran 31-11.00x15s on 15x8" rims on the back of my first '54. I loaded the bed down with firewood each winter and never rubbed the inside or the outside.

MIKEs50Chevy · 01-03-2014, 04:01 AM

I'm running 275/40ZR20 on the rear of my 50 3100. I don't think you could fit any more rubber without tubbing it.

Firstgenfan · 01-07-2014, 07:19 PM

Quote:

Originally Posted by MIKEs50Chevy

I'm running 275/40ZR20 on the rear of my 50 3100. I don't think you could fit any more rubber without tubbing it.

I had to mini tub mine to stuff the 275/40/20's on mine. I'm running a 20x10 wheel.

STOCKISH · 01-07-2014, 10:03 PM

Quote:

Originally Posted by MIKEs50Chevy

I'm running 275/40ZR20 on the rear of my 50 3100. I don't think you could fit any more rubber without tubbing it.

What rear axle are you running, width, and whats your wheel measurements if you dont mind. Thanks

Henney · 10-05-2014, 08:44 PM

Looks like the thread died but I'm looking at the same question Stockish had? Any dimensions available for the rear end? How about up front, what's the setup and does everything fit?

**mr48chev** · 10-05-2014, 10:30 PM

I've got 255 70 15's on 8 inch rims on mine and would be hard pressed to stick a 1x4 between the tire and bed or fender as clearance is very slim. That's with a mid 70's Nova rear axle.

Hampshire · 10-06-2014, 09:25 PM

255/65-16 on 7” wide smoothies from Wheelsmith w/4" backspace. Axle is a 72 Nova.

MIKEs50Chevy · 11-12-2014, 03:17 PM

Quote:

Originally Posted by STOCKISH

What rear axle are you running, width, and whats your wheel measurements if you dont mind. Thanks

The rear axle was in the truck when I bought it but I've been told it's probably out of a Chevelle or something similar. I'm running the 275/40ZR20 tires on Ridler 695 20"x8.5 wheels. I hope that helps.

12-22-2013, 01:48 PM	#1
DENALI Registered User Join Date: Dec 2003 Location: RC Kansas Posts: 71	3100 AD max tire size in rear? What size/width 19" wheel/tire combo can I get in the rear fenders of a 47-54 3100 without mini tubbing? Thanks

12-22-2013, 02:01 PM	#2
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: 3100 AD max tire size in rear? I run 255 75 15 on all my trucks, no tubs, Camaro axle, Monte Carlo, Regal type may be 1" narrower __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

12-22-2013, 02:49 PM	#3
torchlight Registered User Join Date: Aug 2012 Location: Pella, IA Posts: 316	Re: 3100 AD max tire size in rear? I'm running 15x8 inch wheels in the back and the tires are 255/70r15 and I don't think you could go any wider than that without tubs. __________________ Build Thread: "Marvin" (1953 3100)

12-22-2013, 05:21 PM	#4
oldman3 Senior Member Join Date: Mar 2011 Location: West Plains, Missouri Posts: 7,559	Re: 3100 AD max tire size in rear? I'm running a 235/55/17 tire on a 17"X8" rim with a 3-1/2" BS. The rear axle is a 74 nova and is 60" from mounting surface to mounting surface. The bed on these pickups is 50" wide, you have approx. 12" from bed to inside lip of rear fender, for a total of 74". The section width on my tire is 9.5" and I have no rubbing problems. When I was checking on mine the widest section width I could go was 10.4" with only 1/2" clearance to hitting the bed. That tire was a 255/50/17....Jim __________________ my build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=459839 Jimbo's long bed step build:http://67-72chevytrucks.com/vboard/s...t=464626<br />

12-23-2013, 04:40 PM	#5
Old Crow Registered User Join Date: Nov 2012 Location: Fox, AR Posts: 394	Re: 3100 AD max tire size in rear? Back in the day I ran 31-11.00x15s on 15x8" rims on the back of my first '54. I loaded the bed down with firewood each winter and never rubbed the inside or the outside. __________________ Old Crow '54 Chevy Panel, '00 Bounder 36S, '95 Jeep YJ

01-03-2014, 04:01 AM	#6
MIKEs50Chevy Registered User Join Date: Feb 2013 Location: Lynnwood, WA Posts: 77	Re: 3100 AD max tire size in rear? I'm running 275/40ZR20 on the rear of my 50 3100. I don't think you could fit any more rubber without tubbing it.

10-05-2014, 08:44 PM	#9
Henney Registered User Join Date: Sep 2014 Location: Portland, OR Posts: 133	Re: 3100 AD max tire size in rear? Looks like the thread died but I'm looking at the same question Stockish had? Any dimensions available for the rear end? How about up front, what's the setup and does everything fit?

10-05-2014, 10:30 PM	#10
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,711	Re: 3100 AD max tire size in rear? I've got 255 70 15's on 8 inch rims on mine and would be hard pressed to stick a 1x4 between the tire and bed or fender as clearance is very slim. That's with a mid 70's Nova rear axle. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

10-06-2014, 09:25 PM	#11
Hampshire Registered User Join Date: Oct 2013 Location: Western MA Posts: 281	Re: 3100 AD max tire size in rear? 255/65-16 on 7” wide smoothies from Wheelsmith w/4" backspace. Axle is a 72 Nova.



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