Largest Tire/Wheel on Stock 4x4 suspension - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DC_Jimmy · 06-15-2009, 04:20 PM

Want to hear your thoughts on the largest tire/wheel combo possible on stock '71 Jimmy 4x4 suspension without cutting fenders? What offset on the wheels? Seems I've seen some in magazines claiming they run 33x12.50s on stock wheels...

RED72blazer · 06-15-2009, 04:32 PM

here is a pretty good thread on tire sizes

http://67-72chevytrucks.com/vboard/s...d.php?t=182417

RLONG · 06-15-2009, 04:34 PM

The 33/12.50 would be like the old 16.5/1200 from what i remember you would have to trim the front horns. I think 31 or 32 were the biggest without trim maybe a 11-15 possible.

BLUE THUNDER · 06-15-2009, 07:52 PM

I do have a 33x12.50-15 bfg all terrain on a stock 15" wheel, but it was difficult to balance. The tire is bulging on both sides. I have it as a spare. As far as that tire size, you can fit them w/o claerance issues. My 33's are mounted on 12x10 inch wheels. Highly recommend that wheel size. Here are a couple of pics. Later.

teamradrz1 · 06-15-2009, 10:42 PM

I had 32s on my stock 72 blazer and they were perfect.

DC_Jimmy · 06-16-2009, 10:17 PM

Blue Thunder-You highly recommend 12x10 wheels. I'm assuming you mean 15" diameter wheels, 12" wide or 10"? Your Blazer certainly has a good stance. Have you had your springs refreshed or using add-a-leafs or perfectly original suspension?

BLUE THUNDER · 06-16-2009, 11:22 PM

Yup you're right. I meant 15x10 wheels. Fat fingers little keys, what can I say. As far as the Blazer, that's how it looked w/o any lift. No add-a-leaf or re-arched springs. I just put a 4" lift on and this is what it looks like now with 33x12.50-15 on 15x10 wheels.

OldCreek · 06-17-2009, 01:18 AM

Looks Healthy!!!

Thanks for the before and after...it helps guys like me trying to figure out how much lift, etc.

You don't seem to have any rear end squat... what company springs did you buy?

DC_Jimmy · 07-09-2009, 03:08 PM

Thanks for the feedback guys. I finally have my Jimmy down on stock suspension. The 33x12.50s have not rubbed at all, though they are worn quite a bit. Probably go with 32s when I have to buy a new set

vtblazer · 07-10-2009, 04:33 AM

This is an age old debate that IMO boils down to how you plan on using your truck.

33's on stock suspension works okay for the street, not so much on the trails though.

One of the best combo's/fit with a 33, is to use the ever popular rally wheels that came stock on the next gen trucks.

06-15-2009, 04:20 PM	#1
DC_Jimmy Registered User Join Date: Jun 2009 Location: Washington DC Posts: 35	Largest Tire/Wheel on Stock 4x4 suspension Want to hear your thoughts on the largest tire/wheel combo possible on stock '71 Jimmy 4x4 suspension without cutting fenders? What offset on the wheels? Seems I've seen some in magazines claiming they run 33x12.50s on stock wheels...

06-15-2009, 04:32 PM	#2
RED72blazer urban fourwheelin Join Date: Aug 2002 Location: Seattle Posts: 1,007	Re: Largest Tire/Wheel on Stock 4x4 suspension here is a pretty good thread on tire sizes http://67-72chevytrucks.com/vboard/s...d.php?t=182417 __________________ 1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage.

06-15-2009, 04:34 PM	#3
RLONG Registered User Join Date: Oct 2008 Location: BROOKELAND,TX Posts: 228	Re: Largest Tire/Wheel on Stock 4x4 suspension The 33/12.50 would be like the old 16.5/1200 from what i remember you would have to trim the front horns. I think 31 or 32 were the biggest without trim maybe a 11-15 possible.

06-15-2009, 07:52 PM	#4
BLUE THUNDER Registered User Join Date: May 2007 Location: San Antonio Posts: 993	Re: Largest Tire/Wheel on Stock 4x4 suspension I do have a 33x12.50-15 bfg all terrain on a stock 15" wheel, but it was difficult to balance. The tire is bulging on both sides. I have it as a spare. As far as that tire size, you can fit them w/o claerance issues. My 33's are mounted on 12x10 inch wheels. Highly recommend that wheel size. Here are a couple of pics. Later. Attached Images

06-15-2009, 10:42 PM	#5
teamradrz1 Registered User Join Date: Apr 2005 Location: Gresham, OR 97080 Posts: 499	Re: Largest Tire/Wheel on Stock 4x4 suspension I had 32s on my stock 72 blazer and they were perfect. __________________ 1971 Chevy Blazer CST 4X4 2012 Camaro 2SS/RS 2007 Avalanche 4X4

06-16-2009, 10:17 PM	#6
DC_Jimmy Registered User Join Date: Jun 2009 Location: Washington DC Posts: 35	Re: Largest Tire/Wheel on Stock 4x4 suspension Blue Thunder-You highly recommend 12x10 wheels. I'm assuming you mean 15" diameter wheels, 12" wide or 10"? Your Blazer certainly has a good stance. Have you had your springs refreshed or using add-a-leafs or perfectly original suspension? __________________

06-16-2009, 11:22 PM	#7
BLUE THUNDER Registered User Join Date: May 2007 Location: San Antonio Posts: 993	Re: Largest Tire/Wheel on Stock 4x4 suspension Yup you're right. I meant 15x10 wheels. Fat fingers little keys, what can I say. As far as the Blazer, that's how it looked w/o any lift. No add-a-leaf or re-arched springs. I just put a 4" lift on and this is what it looks like now with 33x12.50-15 on 15x10 wheels. Attached Images

06-17-2009, 01:18 AM	#8
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: Largest Tire/Wheel on Stock 4x4 suspension Looks Healthy!!! Thanks for the before and after...it helps guys like me trying to figure out how much lift, etc. You don't seem to have any rear end squat... what company springs did you buy? __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263 Last edited by OldCreek; 06-17-2009 at 01:19 AM.

07-09-2009, 03:08 PM	#9
DC_Jimmy Registered User Join Date: Jun 2009 Location: Washington DC Posts: 35	Re: Largest Tire/Wheel on Stock 4x4 suspension Thanks for the feedback guys. I finally have my Jimmy down on stock suspension. The 33x12.50s have not rubbed at all, though they are worn quite a bit. Probably go with 32s when I have to buy a new set __________________

07-10-2009, 04:33 AM	#10
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,537	Re: Largest Tire/Wheel on Stock 4x4 suspension This is an age old debate that IMO boils down to how you plan on using your truck. 33's on stock suspension works okay for the street, not so much on the trails though. One of the best combo's/fit with a 33, is to use the ever popular rally wheels that came stock on the next gen trucks.



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