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For a 3.25 tyre, you would require a 1.85 rim which can take up to a 3.50 tyre. And for a 4.00 tyre you will require a 2.15 rim. The clearance problem is not the frame its, the torsion bar
I doubt the mods will improve the handling. Sent from my SM-A750FN using Tapatalk
Can not see any mention on fitments to any SOHC's on the Avon site With 2.15 rim and a 4.00 tyre, you only have a 10 to 15mm clearance between the tyre wall and the torsion bar. Any wider on the rim the tyre wall will be wider when inflated
Quote from: Johnwebley on July 14, 2020, 09:23:48 AMI doubt the mods will improve the handling. Sent from my SM-A750FN using TapatalkAs us Ex racers know John, It is down to the surface, how skillful the rider is and wider rims don't make any difference whatsoever
I found the handling to be perfect with 2.15 rims front and rear, it stops rim creep on the tyre when using wider tyres than standard.