Forum Discussion
jadatis
Sep 26, 2020Explorer
Its because the one is calculated in maximum load for another speed ten the other. Rv tires mostly for 81 ( 130) or 87 mph ( 140 kmph), and the X Coach for only 75 mph (120kmph)
Car tires are always calculated in maximum load for 99mph( 160 kmph).
MICHELIN XZA2 7830 lbs AT 120 psi is Loadindex 152 AT 8.3 bar
X-coach 8270 lbs AT 123 psi is loadindex 154 AT 8.5 bar
X multiway 7830lbs AT 123 psi, is LI 152 AT 8.5 bar.
So even 3 tires I saw on the Michelin site in the sise 295/80R22.5
Can also be that the first and third are for 75mph(120 kmph) and the second for 68 mph( 110kphmph). For those tires they dont give maximum speed of tire on the site.
3th list highest gives for 120 psi lower ,because the chose maxload AT 123 psi. And first gives full 7830 at 120 psi.
In case of daubt always use the list that leads to higher pressure. Better to high , to low can give ireversible tire-damage, to high only discomfort and lesser gripp.
Car tires are always calculated in maximum load for 99mph( 160 kmph).
MICHELIN XZA2 7830 lbs AT 120 psi is Loadindex 152 AT 8.3 bar
X-coach 8270 lbs AT 123 psi is loadindex 154 AT 8.5 bar
X multiway 7830lbs AT 123 psi, is LI 152 AT 8.5 bar.
So even 3 tires I saw on the Michelin site in the sise 295/80R22.5
Can also be that the first and third are for 75mph(120 kmph) and the second for 68 mph( 110kphmph). For those tires they dont give maximum speed of tire on the site.
3th list highest gives for 120 psi lower ,because the chose maxload AT 123 psi. And first gives full 7830 at 120 psi.
In case of daubt always use the list that leads to higher pressure. Better to high , to low can give ireversible tire-damage, to high only discomfort and lesser gripp.
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