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Wheel Spacers ?

GC_chief

Well-known member
What size would you all recommend that goes great with the BONOSS wheel spacers? I’m a newbie so all the information I can get will be appreciated!
Assuming you’re talking about size wheels on a 2021 GCL.

The largest wheel on the 2021 GCL is the Summit Reserve 21x9 with and ET50 and 265/45R21 tires, giving it a 7” backspace and a 30.7 OD. If you wanted to stay in OE spec, you can use that info to size out various other wheels. Also note that heavy duty breaks for towing will almost always need an 18” wheel or bigger.

As for tires, general consensus for models with Quadra-Lift air suspensions is that the largest tire possible without rubbing is a 32” OD. Also, due to the potential to drop the suspension 1.5” in park mode, it’s not advisable to extend the wheels outward more than 0.6” (6.4” backspace). That being said, spacers on a non-QL are a different story, but generally you’ll need a lift kit over 2.5” to exceed the info above (bigger tires, lower offset, etc).
 
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