Grasshopper mower tire pressure

[sixdogs]

Grasshopper is pretty adament at 8 psi for their mower tire pressure for the large tire. But why?

Street talk is that you have to keep such a low and exact pressure because more will screw up the trans hydro motors. That sounds plausible but than again might only be beer talk. But is this true or just hooey?Does anyone know? Asking for a friend.

 

[gstrom99]

More pressure won't affect the hydro units, but will give a harsher ride.

 

[SARG]

And Ferris states 15 psi for the rear & 25 for the front on my 1500.
Seems to me that lower tire pressure would be more stressful on the motors.

 

[Eagle1]

My experience says once you get over 10 PSI the traction goes to pot and down the hill you go, then can't drive back up.
My old Yazoo is mountain goat with 12 PSI, just tracks right across the hills.

 

[CaptPat]

I can't answer the question, however, 8 psi in my drive tires has worked just fine in my Grasshopper 930D -- the ride is good, and has plenty of traction for those hilly areas.

 

[lilranch2001]

EXmark wants 13 PSI, but I’m running 10 because the ride on my new one seems so harsh

 

[CloverKnollFarms]

I run 10psi rear and 8 in front on my 1300 pound Hustler. Mainly for traction. And ride quality

 

[SARG]

The variance in "suggested" psi for all the ZTRs out there is difficult to understand. They all seem to use the same tires and the structures are very similar..... but on just the front I've found there are differences of up to 17 lbs.

 

[Yander]

Pretty sure I checked the max on our 725d the other day and max was 22lb. maybe I need to look at it again. We don't use it much, it is for mowing a sod lane and a barn lot and a backup mower. It rides ok, I think the tires are at 20lb. on the front (Big tires). Front deck.

 

[GaryM]

I've got a Raptor 54" zero turn abd they say 8-12 psi. I'm heavy, so run 10 psi.