How Large of a Spare Tire will Fit Underneath?

[Kahlua]

Just installed a new set of KM2s in 315x75x16. I don't have an after market bumper to carry a full size spare, so I am limited to what will fit in the spare tire space underneath. Has anyone tested to see what the largest size tire is that will fit underneath?

Thanks!

 

[1loudLX]

SEARCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

ok, i've got a 35 under there.

 

[Kahlua]

Thanks Loud.

 

[larryt]

I was just looking into the same thing, and found this, which should start to answer your inquiry: https://forum.ih8mud.com/100-series-cruisers/159902-spare-tire.html. I will probably do some of the mods I found here before trying the 285/75.

 

[Kahlua]

Thanks larryt. I may go with the 255x85x16

 

[ShottsUZJ100]

Your 315 will fit under there if you do not have the factory trailer hitch installed. You can see it in this pic:

 

[Kahlua]

Thanks Shotts.

I've got the hitch and a fishing boat. It's definitely necessary to keep both.

Do I need to do any modifications to make a 255x85x16 fit? The specs on the KM2 say that it is 33.3 inches at that size.

I'm thinking that a thinner tire will help with clearance.

 

[ShottsUZJ100]

My 32.8" AT KO 285's fit with the hitch though it was close. You need another 1/2". Might work without hitting the sway bar. Measure from the rear of the hitch to the sway bar. ???

 

[LandCruiserPhil]

My 32.8" AT KO 285's fit with the hitch though it was close. You need another 1/2". Might work without hitting the sway bar. Measure from the rear of the hitch to the sway bar. ???

Sway bar

 

[Michael Hanson]

31/10.50/15 fit under mine. MIke

 

[hoser]

31/10.50/15 fit under mine. MIke

I'm more interested in how you fit 15" wheels on a 100!

 

[2000UZJ]

I'm more interested in how you fit 15" wheels on a 100!

X2!

 

[1loudLX]

The 33s will fit. I'd get the base slee bumper and use that as the hitch and sling the tire underneath, that's my setup.

 

[Anthony.L]

But the tire carrier on the rear slee looks so much sexier!

 

[1loudLX]

But the tire carrier on the rear slee looks so much sexier!

Make you a deal, buy me a bumper with the spindles and right side tire carrier and ill give you my current bumper, since you want me to be sexy and all.

 

[Kahlua]

I believe I read that Slee's bumper was not rated for towing. Is that statement just for liability purposes, and if so, how heavy are the trailers that people are towing with it? I'd hate to go that route for a spare tire just to find out I can't tow my boat.

 

[1loudLX]

The requirements needed to get it tow rated would be very expensive for such a small shop. Personally? I think my slee bumper is secured to my frame much much stronger then the tow bar. I'd tow up to the max rating of the original hitch without thinking about it. You have to decide for yourself though.

 

[Kahlua]

That sounds like the way to go.

Thanks Loud!

 

[1loudLX]

Check out a bumper in person and you'll see what I mean.

 

[shamans cruiser]

tanks for the help got to get those km2s on my rig