my xj? is there a diffrence?

 

s/cd? Im sorry I lost you?

 

slotted/cross drilled
not any, but if they say they will fit a XJ make sure they say what years. 99-01 rotors are slightly different, not much but side by side you can tell. 98 and older are composite and 99-01 are cast. I think that is the years, 99 or 00 is when they switched to cast.

 

Unsure of your question, but there are two types of rotors: cast & composite.

 

Gotcha, personally I wouldnt run slotted or drilled because I fear of adding to rocks getting stuck in the breaks even more then they already do. But plenty of people run them on their XJ's so I dont see a problem with you doing it.

 

I should also add that cheap ones are known for cracking because of the heat. Cheaps ones are just regular rotors slotted or drilled. The expensive ones are expensive because they go through a different process and are meant to be slotted or drilled. There is benefits to running s/cd rotors, just in my opinion not on Jeeps. They are more for sports cars, like auto cross or something of that nature. I just put on a set of good ceramic pads and they helped my stopping power a lot. They were $53 at Advance Auto Parts. Just food for thought.

 

Having a sports car as well as the Jeep I would have to agree with you. S/cd rotors on all 4 corners sure makes a difference when braking on a sports car but I doubt anything short of a battleship's anchor will stop an XJ like a sports car.

 

Be sure to know the thickness of your rotor. There are two sizes if I'm correct. I can't remember the sizes but a lot of online stores list two sizes for the cherokee.

If I had the $$, I would run slotted rotors. They improved braking on my tj big time and I wish I had em on the xj too. I do mostly mudding and never had any issues with mud or rocks getting stuck in it or clogging the slots.

 

Never tried them on a TJ, but did but a set on my daughter's '92XJ and couldn't tell much, if any, difference. Definitely not enough to justify the cost vs replacements.

 

IMO the XJ is beyond repair when it comes to braking. There simply isnt a whole lot we can do to make it considerably better. That said I just stick with the basics when it comes to braking.

 

They were powerstop slotted rotors and hawk brake pads. I think this is the best combo. At that time, i also had the rear brakes rebuilt and system flushed so a majority of that improvement was from the brake system overhaul, but it was a BIG difference stopping those 33's. I never could skid to a stop with those meats and i could do it on command with the new rotors/pads.

 

Ha! I dont know when the last time I could lock up my tires was.

 

Yeah i didn't think it was possible. It happened on the initial drive after the brake overhaul. After leaving a few skid marks on the road, i got the feel down and didn't do it much after that. I didn't want to mess up my new kumho's (the last of the discontinued tire ).

But it was cool though. every time i did it, it reminded me of those braking tests they do on Top Truck Challenge

 

The drums have to be adjusted properly. I find that a lot of times people have braking issues because the drums are barely even grabbing, so it's mostly the front working. My 83 CJ7 has stock brakes all the way around, it'll lock up the tires on command with 33 inch MT's. Same with my XJ's, they both lock up with no problem.

D35 drums can be directly swapped with D35 discs. IMO, you'd be better off doing this conversion then getting slotted rotors. Properly adjusted drums work great, but they aren't discs!

D35 Disc Conversion