One thing is to compare offset on the sheels. If the wheel has the extra width in the wrong place, it could lead to wear also.
Sway bars could help. They would reduce roll during steady state cornering.
You might also contact H&R or another spring manufacturer about higher rate springs, but with stock ride height. This would make the ride firmer though, but without the added problem of lower ground clearance.
'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)