XPost: alt.autos.toyota   
   From: crwlrjeff@yahoo.com   
      
   I'm confused.   
      
   Once the rotors warp, they remain warped until they are machined or   
   replaced. Warping is not a transient condition where the experience is on a   
   mountain road but not on other roads. And, braking on a mountain road should   
   be lighter and more evenly applied on a mountain road than in other places.   
   The brakes might be used more often, but the braking ought not be "harder".   
   It you are driving into a turn and mashing the brakes, your passengers are   
   probably on the verge of puking.   
      
   Having said that, slots and crossdrilling are done to help extract heat. The   
   pads also act, in a manner, as a heat sink when they are still thick. The   
   problem is, you allow the pads to get thin and htey do not act as a heat   
   sink any longer. Coupled with aggressive driving, they build up heat and   
   this helps warp the rotors.   
      
   One thing to consider with slotted and crossdrilled rotors is that they can   
   not be machined on a lathe. I bought some bargain-basement rotors for my   
   car, and the front rotors were warped from the get-go. I called the company,   
   they shipped another set that was also warped. I kept the original set, got   
   the new set ground on a flywheel grinder and installed them, then got the   
   original set ground too, and put them into storage after coating them and   
   wrapping them in plastic wrap. I'm thinking that I can use them later, when   
   the rotors on the car wear out ... I can't recommend the bargain basement   
   place I bought my brakes from -- only because I had to buy additional   
   service before I could use them -- but I'm reasonably happy with the   
   performance so far.   
      
   I bought 4 rotors and both sets of pads for the light side of $200, then   
   they shipped two more front rotors for free. I did a search on eBay for my   
   brakes.   
      
      
      
      
      
      
   "SMS"  wrote in message   
   news:4aba4368$0$1595$742ec2ed@news.sonic.net...   
   > The rotors on my 4Runner need to be replaced because when they heat up   
   > they warp and the brakes chatter. This occurs only when driving in the   
   > mountains where there's more harder braking than in city driving. The   
   > original rotors have been resurfaced once. and that's about it for them.   
   >   
   > Are there any higher performance rotors that are less likely to warp or   
   > fade than the stock Toyota rotors? What are the advantages and   
   > disadvantage of drilled versus slotted versus drilled and slotted versus   
   > plain? Do all slotted rotors have a left and right?   
   >   
   > Online I've found:   
   >   
   > Brembo Sport Rotors (drilled and slotted) $110 each   
   > Disc Italia (drilled and slotted) $115 each   
   > Disc Italia (slotted) $115 each   
   > Power Disc (drilled) $90 each   
   > Power Disc (slotted) $90 each   
   > X Brakes (drilled and slotted) $62.50 each   
   > Power Stop (drilled) $96 each   
   > Power Slot (slotted) $99 each   
   > Power Slot Cryo Slot (slotted) $130 each   
   >   
   > JC Whitney no-brand listed (drilled) $66 each   
   >   
   >   
   > What about brake pads? What should I get?   
      
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