I have the same Mastercraft AXT but its 315s and the same feedback as @Xaf . I am usually on 10psi , but found it even better going at 8psi. Needed more momentum up the dunes - so to sum up:
1- 35 Tyres on stock differential 3.73 = lose engine power
2- 35 Tyers on 4:10 differential = regain power lost
I am doing the 4.1 ring and pinion this week ( expensive option) . Lets see how it performs coming week.
Thanks @Jeepie for the drive and great support from @Ale Vallecchi and @Brette
Pics uploaded , as I was behind Marjan , you will see a lot of the legendary TJ . Video link as well !
Yes it's more of a personal preference .. can get you these routes
Wadi Zikt / Wadi Sidir/ Wadi Shawka / Jabal Al Akdhar/ Baraq Dam
They are pretty fun and enjoyable by many