I would like some opinions. Do you think it is more cost effective to remove old rotors and have them machined or just buy new ones. I don't know what the current thickness of mine are now. I have not measured them. Are new rotors of better design and quality. I have an '88 Hurricane and am planning on cleaning and rebuilding the whole front brake set up this spring. Thanks!

 

min thick on oem is 4 mm i bought replacements and min is 3.5 with more colling holes so i think its worth the money evensaves down time

 

Min thickness OEM is 4mm on rear disk, 3.5mm on front. My opinion: if there's reasonable amount of meat on the pads, and the discs are within spec (and nobig grooves/ridges), why machine them? However if you are keen to, then to answer your questions from my research:
1. front brake rotorshave not changed much over time in terms ofperformance - the pads make the most difference (if you are going from street to race);
2. from experience,OEM Honda pads and rotors stopan unmodifiedHurricanegreatfor fast track work - don't know if that is the same for a modified bike andfull-on race conditions;
3. aftermarket stuff is a bit of a guess -I've foundno objective information comparing different rotor materials and different pad material combinations, so unless you can do testing or find someone who has tested them under your conditions, its really down to how much you want to believe the advertisers that their aftermarketstuff will improve your lap times/status/job prospects/sex life. Some pads are aggressive on the disks, others fade, some do both, so its largely suck-it-and-see.

Therefore its mainly down to cost, your timeand the proportion of wear you'll have left on the existing rotors. If there's nothing really wrong with the disks, then I'd rather putthe doughtowards performance/safety enhancements like emulators and good tyres!