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Post your T1 wheel/tire setup

BevoXV
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jail4u677 Enthusiast

jail4u677

Posted
Posted

NEED INFO!  Today, I took my 2019 GMC AT4 to the shop to have the Readylift 2in SST kit installed with a set of 305/50R20 Nittos on my stock rims.  Shop just called and said only way to run these tires & rims is with a 1/2 to 3/4 inch spacer.  Anyone else with same setup have this issue???

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BevoXV
BevoXV

I know the K2 guys have one of these threads so I figured we should too. Think it’d be useful for others. Post pics of your setup! Make sure to add specs of the wheels/tires, spacers, suspension, rubb

bamulk
bamulk

Method NV 305 18x9 -12 Offset Cooper Discoverer S/T Maxx 295/70/18 1.5 Level (Trailboss) Slight Rub on mudflap on full lock.   

BevoXV
BevoXV

Caliper clearance!

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Smrtasp Enthusiast

Smrtasp

Posted
Posted

That tire is 12.5 wide. If you are running it on a stock wheel, the spacers would make sense as I think the stock tire is 11.4 wide. Its probably getting really close to the UCA given the factory offset.

WheelsASAP.com Enthusiast

WheelsASAP.com

Posted
Posted
39 minutes ago, jail4u677 said:

NEED INFO!  Today, I took my 2019 GMC AT4 to the shop to have the Readylift 2in SST kit installed with a set of 305/50R20 Nittos on my stock rims.  Shop just called and said only way to run these tires & rims is with a 1/2 to 3/4 inch spacer.  Anyone else with same setup have this issue???

That is certainly a known issue. Your factory wheels don't offer the offset / backspace required to clear your upper control arms. If you decide to run spacers make sure you go with hub centric quality spacers such as those offered by Bora. 

jail4u677 Enthusiast

jail4u677

Posted
Posted
4 hours ago, WheelsASAP.com said:

That is certainly a known issue. Your factory wheels don't offer the offset / backspace required to clear your upper control arms. If you decide to run spacers make sure you go with hub centric quality spacers such as those offered by Bora. 

Thanks!!!  Any idea on spacer size?  Tech at the shop said 1/2 " to 3/4 ".  Did some internet shopping and most I found were 1" or greater.  I figure better to go with a little bigger in the 1" than not enough.

grrr027 Enthusiast

grrr027

Posted
Posted
7 minutes ago, jail4u677 said:

Thanks!!!  Any idea on spacer size?  Tech at the shop said 1/2 " to 3/4 ".  Did some internet shopping and most I found were 1" or greater.  I figure better to go with a little bigger in the 1" than not enough.

Your stock wheels likely sit approx. 3/4 inch inside the wheel well, give or take. So if you go with a larger spacer than that, you’ll have some poke. My suggestion would be to go with what the shop recommends.

jail4u677 Enthusiast

jail4u677

Posted
Posted

Thanks again.  Any ideas on where to shop that I could get them fast?  Also, some places sell as a pair and others sell all four.  Do I need 2 or 4?

loud_pipes Enthusiast

loud_pipes

Posted
Posted
NEED INFO!  Today, I took my 2019 GMC AT4 to the shop to have the Readylift 2in SST kit installed with a set of 305/50R20 Nittos on my stock rims.  Shop just called and said only way to run these tires & rims is with a 1/2 to 3/4 inch spacer.  Anyone else with same setup have this issue???


This might help you and your shop.


https://wheelsasap.com/gmc-at4-oversized-tire-trimming-guide/


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Delta D Enthusiast

Delta D

Posted
Posted

1.75 Bora spacers, stock wheels and tires - before/after photo attached.

piZap_1595029403141.jpg

FlyerPete Enthusiast

FlyerPete

Posted
Posted
2 hours ago, CrunchyBlack_386 said:

Looks great! Any rubbing at all?

No rubbing full lock.  I can fit my hand between tires and front liner and 1/2" clearance on rear liner.  

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BetaX Enthusiast

BetaX

Posted
Posted

2" SST

285/75/18 Nitto Ridge Grapplers

Zero rubbing anywhere surprisingly.

Very little clearance on the upper control arm but it clears. Don't think you could go any wider without different wheels or addition of wheel spacers. 

IMG_3562.thumb.JPG.6d6b74da8ca0e67795a7b1a6c4b463b1.JPG

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N2HighVoltage Enthusiast

N2HighVoltage

Posted
Posted

2020 GMC SIERRA 1500 4X4 CREW CAB 3.0 Duramax

Front: FOX 2.5 Coilovers front (3.5” of lift)

Rear: Deaver mini pack w/FOX 2.0 (1.5’-2” lift)

Wheels: American Racing AX202 18x9 0mm/5.0” backSpacing

Tires: BFG K02 35x12.50x18
Trimming required...good instructions adjust based on your needs...no rubbing now.  
186318

 


 

 

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81CBA790-B00C-4BAA-89D4-747C875CE911.jpeg

  • Like 4
langston1726 Enthusiast

langston1726

Posted
Posted
2020 GMC SIERRA 1500 4X4 CREW CAB 3.0 Duramax
Front: FOX 2.5 Coilovers front (3.5” of lift)
Rear: Deaver mini pack w/FOX 2.0 (1.5’-2” lift)
Wheels: American Racing AX202 18x9 0mm/5.0” backSpacing
Tires: BFG K02 35x12.50x18
Trimming required...good instructions adjust based on your needs...no rubbing now.  
186318
 

 
 
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DEED15E0-077D-4545-BCBD-C21ADCD2D0EA.jpeg.1f0714cc975803765d13ae9ac73f8e9c.jpeg
A7C4043D-1A12-489D-A996-362AAD912D83.jpeg.658487646d74dfa09f794c29df2d9068.jpeg
81CBA790-B00C-4BAA-89D4-747C875CE911.thumb.jpeg.4f7c30ec0643175285f571e3b4845f09.jpeg

Nice set up! How are you liking the Duramax?


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