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Bias works out to 57.9% front. E46 330 fronts are: 57mm piston acting on a 325mm rotor. (25mm vented.) If we put the E46 328 fronts on with E36 325 rears, we get 61.6% front bias. If we put the E46 330 fronts on with E36 325 rears, we get 64.8% front bias. If we put the E46 330 fronts on with E46 328 rears, we get 61.2% front bias.
Front: 4 Piston Caliper with 41.3/44.5 Pistons; E46 M3 Front Rotors (325mm) Custom Brackets; Rear: 4 Piston Caliper with 38.1/41.3 Pistons; E38 Rear Rotors (328mm) Custom Brakets; The positives with this approach: The kit would uses all off the shelf parts except for the caliper mounting brackets.
Garage List. 2006 330i [0.00] 2006 330i [0.00] Quote: Originally Posted by E90Fleet. 335i disks are Front 348mm x 30mm, Rear 336mm x 22mm. 330i disks are Front 330mm x 24mm, Rear 336mm x 22mm. The pads listed for them are different. I wonder if they (rotors, calipers) would be interchangeable with the 330i.
E36 M3 front caliper pistons (60mm diameter) are too large for an E46 330i front caliper, which has 57mm pistons. I don't know the size of E46 M3 pistons, but they're probably at least as big as the E36 M3 pistons.
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e46 330i front rotor size
