clearance issues for using 13" radial tires on my Aliner

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,502
Oakland, California
using a template I determined that I have unequal side clearances between sidewall of a future 13" radial (ST175R90) and the inside face of the wheel well, the clearance on the inner side is about double that I would have on the outboard side.

To remedy this I need to do both of these things:

Buy wheels with +0.5" offset (moves wheels inboard 0.5")

Also buy and install 1/8" thick wheel (hub) spacers to move wheels outboard 1/8"

The net result is +3/8" offset.

Any comments?
 

Sjm9911

Super Active Member
May 31, 2018
11,460
Nj
Would it reduce weight carrying capacity? I know lifting trucks, and bigger rims sometimes equates to less capacity. Pther then that they will stick out a bit more.
 

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,502
Oakland, California
And so it begins. I bought the two spacers, and I bough two 13" wheels [rims] (not one, in order to get free shipping).

I will install the wheels and spaces and use a tire template to recheck clearances before ordering the radial tires.
 

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,502
Oakland, California
Because I will be using 13" rims with +0.5" offsets, and they are not common at local dealers, I will carry two spares.
(especially since I ground down one rim lip on a prior trip, at night, see separate post)

Spares will be bought only after road testing on two 13" road wheels with radial tires confirms a lack of side-rubbing inside the wheel wells.
 

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,502
Oakland, California
rims arrived and installed with spaces, checked future tire clearance (in the rain) with a template, and found that 13" rims will fit with good lateral clearances to the wheel well liner.

Monday I will call my local tire guy about what he can buy for me. Probably I won't like his answer and will buy tires online.
 

Anthony Hitchings

Super Active Member
Silver Supporting Member
Mar 2, 2019
3,502
Oakland, California
My hub spacers OD is not large enough (5.75" not 6") for full contact (same contact patch as direct wheel-to-hub, based on paint rub off).
So the hub spacers will not be used. Clearances should still be OK based on remeasuring with tire template.
Now waiting on tires from eTrailer.
 




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