Another tire question

[Bebo]

Quick question.....replacing 4 tires on my 5er with Sailun S637T....my main rims are good for the 110 psi, my spare however my spare is not....should I get a flat is there a big issue running an 80 psi spare with rest of tires at 110psi

[CWtheMan]

Quick question.....replacing 4 tires on my 5er with Sailun S637T....my main rims are good for the 110 psi, my spare however my spare is not....should I get a flat is there a big issue running an 80 psi spare with rest of tires at 110psi

If you have to use it, treat it just like you would a 50 MPH temp spare on a car.

It should not be used in any normal rotation sequence. "Running" tires on any axle need to be the same size and design.

[Bebo]

That's about what I figured.....after this last trip may just buy a new spare wheel....china bomb struck, TPMS could help me....no abnormal pressure or temp.....not happy

[sourdough]

I'm with buying the new wheel for the new tire. There's no reason to have one odd ball tire/wheel when you're in a difficult situation trying to get from A to B that could cause you grief IMO.