Cooper ST Maxx 225/75/16 Feedback

Submitted: Thursday, Sep 20, 2012 at 15:11
ThreadID: 98138 Views:3539 Replies:2 FollowUps:1
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Just some initial feedback after fitting these tyres to my ute. I have been running various sets of tyres as I have quite a few sets of rims, the last being BFG AT for highway work, prior were Cooper ST and Maxxis Buckshot Mudders for around the farm, so I can give back to back comparisons. All travelled on known roads.
Cooper ST Maxx @ 34psi for highway. Short trip on dirt to get to the highway the car was noticeably showing understeer with me drifting wide on all corners until the tyres 'bit' and then swung me around. A general feeling of the ute wandering. Much harsher ride than other tyres at same psi
Highway use showed the same understeer, wandering and harsh ride.
I think the sidewalls have less flex in them and therefore contribute to the harsh ride and understeer (similar to when I rang Toyo M55s)
From my experience with Coopers they seem to want to run at a few psi lower than other brands, seems more so with these harder sidewalls. I use the 4psi rule and think my Coopers might benefit from 6 psi rule.
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