Weight capacity of underbody spare tire hoist/carrier

[s10dragracer888]

Hey guys.

 

i plan on doing a bit of overlanding this summer and fall in my 2024 5.3 crew cab during my camping trips in the Shenandoahs out here in Virginia. I’m getting a matching set of five 275/70R18 tires (stock size for a ZR2). Either Mickey Thompson Baja Boss A/T’s, or Falken Wildpeak AT4Ws. The closest tire shop will be miles away; and and I’d need to make it some distance in case of a puncture. I have two questions, the first of which is most important:

 

1.) with a stock aluminum rim, 18” x 8.5”, will the spare carrier need to be assisted with a y-strap, or would it be alright to hang it up and forget it? Picture of the rim will be posted below.

 

 

2.) Will this tire/wheel combo fit under the truck without any issues?

 

I'm not doing any high speed driving, except on the highway, and I won’t be doing any Baja or stump jumping with it. At most, the trails will be a little sketchy and I’ll be taking it slow.

[asilverblazer]

Probably won't help your specific question, but on my truck the factory one was gone (I bet I know why), so I put on a replacement. The internal clutch couldn't lift the tire without slipping. A second one the cable snapped and left my spare on the road.

I ended up fabbing one out of boat trailer winch and loop a length of chain around the frame and through the wheel for safety. 

[Luckyfd1]

I have a 35x12.5x18 in my stock spare spot, fits perfect. 
 

sorry I didn’t notice the wheel hub is solid? If it’s not it will fit. 

Edited February 4 by Luckyfd1

[s10dragracer888]

On 2/3/2026 at 10:07 PM, Luckyfd1 said:

I have a 35x12.5x18 in my stock spare spot, fits perfect. 
 

sorry I didn’t notice the wheel hub is solid? If it’s not it will fit. 

It’s just the removable center cap. It’s an OE replica.