Will a 37" KO2 fit in the OEM spare tire location?

[GR8Ride]

I decided on Geisers for the front—them being progressive was the major selling point for me. I have 20” VenomRex 602 wheels, but trying to decide between BFG KM3s in either 37x12.5R20 or 325/60R20. I would really like to go the full 37”, but I am concerned about the amount of trimming and/or loss of off-road performance.

Would you happen to know what the weight is of each one?
Thanks!


HAPPILY EVER RAPTOR

 

[RexDad]

Would you happen to know what the weight is of each one?
Thanks!


HAPPILY EVER RAPTOR

BFG KM3 37/12.5R20: 79.65 lbs
BFG KM3 325/60R20: 77.8 lbs
20x9 VenomRex 602s: 28.9 lbs

The VenomRex wheels have an ET+12 offset.

 

[GR8Ride]

BFG KM3 37/12.5R20: 79.65 lbs
BFG KM3 325/60R20: 77.8 lbs
20x9 VenomRex 602s: 28.9 lbs

The VenomRex wheels have an ET+12 offset.

Thanks a lot! I recently purchased the VenomRex 601’s in 20” and want to go with 37’s and keep the wheel/tire weight combination around the same as the stock beadlocks and BFG’s on my ‘19.
I’m hoping just the Eibach’s upfront will work for me. I’m not planning any major off-roading and if I do I’m keeping the stock set up.
Good luck and please keep us posted!
Thanks again!


HAPPILY EVER RAPTOR

 

[RexDad]

Thanks a lot! I recently purchased the VenomRex 601’s in 20” and want to go with 37’s and keep the wheel/tire weight combination around the same as the stock beadlocks and BFG’s on my ‘19.
I’m hoping just the Eibach’s upfront will work for me. I’m not planning any major off-roading and if I do I’m keeping the stock set up.
Good luck and please keep us posted!
Thanks again!


HAPPILY EVER RAPTOR

Sent you a PM

 

[Eggorian]

There's about 1.25" between the differential cover and the 37" KO2 spare underneath my truck.

 

[zombiekiller]

There's about 1.25" between the differential cover and the 37" KO2 spare underneath my truck.

View attachment 135015

it is really kind of bizarre how much variance there is from truck to truck and year to year.

I still have my stock dif cover with rubber on it.

 

[xgardx]

Thanks a lot! I recently purchased the VenomRex 601’s in 20” and want to go with 37’s and keep the wheel/tire weight combination around the same as the stock beadlocks and BFG’s on my ‘19.
I’m hoping just the Eibach’s upfront will work for me. I’m not planning any major off-roading and if I do I’m keeping the stock set up.
Good luck and please keep us posted!
Thanks again!


HAPPILY EVER RAPTOR

I’m doing a similar route...
Bought the 602s in 17”. Going from factory beadlocks ( 34 #s). Down to 24#s with the venomrexs. Doing either 37s in KO2s load D I believe are only 69.x factory KO2s are 64.x. Or may do the KM3s. I think are around 80# in load D for 37x 12.5x 17, Costco guy thinks they can still get the KM3s in a load C though which I anticipate would be a few pounds lighter

 

[RexDad]

There's about 1.25" between the differential cover and the 37" KO2 spare underneath my truck.

View attachment 135015

Do you think that this is enough space to keep the heat from melting the tire?

I am wondering if a 37” KM3 will have the same clearance.

 

[GR8Ride]

I’m doing a similar route...
Bought the 602s in 17”. Going from factory beadlocks ( 34 #s). Down to 24#s with the venomrexs. Doing either 37s in KO2s load D I believe are only 69.x factory KO2s are 64.x. Or may do the KM3s. I think are around 80# in load D for 37x 12.5x 17, Costco guy thinks they can still get the KM3s in a load C though which I anticipate would be a few pounds lighter

Knowing I won’t have any performance loss due to more weight in each corner is why I felt this is the way to go. I love the look. I haven’t chosen my tires as of yet.
What suspension mods do you have?


HAPPILY EVER RAPTOR

 

[xgardx]

Knowing I won’t have any performance loss due to more weight in each corner is why I felt this is the way to go. I love the look. I haven’t chosen my tires as of yet.
What suspension mods do you have?


HAPPILY EVER RAPTOR

Well there is still some performance loss to be expected. Even if the overall tire/ wheel combo is about the same. The bulk of the weight( the threads of the tire) is rotating further out on a larger radius. It just won’t be ‘as bad as’ say slapping even heavier MTs on a heavy wheel.

I have Geisers up front and icons on setting 1 in the back. Will probably have to trim a little on the front fenders, as to be expected to clear them for street use. Going to keep the factory’s ford dealership trips or actual heavy off-roading trips if I ever find time too, lol