Rotors.... for 4.8is with hawk Pads??

[JCL]

Originally Posted by X5rolls

Can anyone recommend a high quality drilled rotor for the X5?

Thanks!

No, because drilling a rotor reduces the quality of it. If you can find a rotor with holes cast into it, like the Porsche rotors, it is more likely to be a high quality rotor.

If you want the looks, with only a small decrease in performance, then the Centric Stoptech is an option. It is a Centric Premium, which is a good quality rotor, but then it is drilled and/or slotted. Centric note that it is not recommended for demanding applications as it has reduced performance over their Centric Premium rotor, due to the stress risers and reduced thermal mass.

[X5rolls]

Originally Posted by JCL

No, because drilling a rotor reduces the quality of it. If you can find a rotor with holes cast into it, like the Porsche rotors, it is more likely to be a high quality rotor.

If you want the looks, with only a small decrease in performance, then the Centric Stoptech is an option. It is a Centric Premium, which is a good quality rotor, but then it is drilled and/or slotted. Centric note that it is not recommended for demanding applications as it has reduced performance over their Centric Premium rotor, due to the stress risers and reduced thermal mass.

Thanks for the suggestions. I'll check out the Centric Premium and see if there are others that are cast with the holes. Funny you mention the Porsche, my Carerra has drilled rotors (at least that's what they are called - not sure if they are cast that way) and they really look great and of course perform very well.

[JCL]

The high end Porsche ones are cast that way, and then drilled to finish them up. You won't likely find rotors for the X5 that are cast with holes, as they are all using inexpensive blanks and then drilling them.

[X5rolls]

Originally Posted by JCL

The high end Porsche ones are cast that way, and then drilled to finish them up. You won't likely find rotors for the X5 that are cast with holes, as they are all using inexpensive blanks and then drilling them.

Interesting, I didn't realize some were cast and then drilled to clean/finish them up.

[Airfrcd]

Originally Posted by X5rolls

Can anyone recommend a high quality drilled rotor for the X5?

Thanks!

Rotora/.

[///Bruce]

FWIW, try looking at Stillen.com for x-drilled rotors. I have them on my son's Civic Si, my wife's Lexus GS300 and am looking at a pair for my 06 4.8is. Zero issues and several years use.

[dpgx5]

Has anyone here used these rotors? BMW X5 E53 4.4L 04 05 2004 2005 332mm Rotors & Pads FRT on eBay.ca (item 150488757365 end time 03-Oct-10 08:23:32 EDT)

These are the ones from stillen.com as per above.
STILLEN : STILLEN Sport Rotors - 1-Piece

[X5rolls]

Originally Posted by dpgx5

Has anyone here used these rotors? BMW X5 E53 4.4L 04 05 2004 2005 332mm Rotors & Pads FRT on eBay.ca (item 150488757365 end time 03-Oct-10 08:23:32 EDT)

These are the ones from stillen.com as per above.
STILLEN : STILLEN Sport Rotors - 1-Piece

Thanks guys, the Stillen's look great - $800 bucks isn't as much as I was thinking they would be. These go on my list to research when I need to get brakes, I still have a fair amount of pad left at 44k miles. I'd guess I'll get 50k out of them. I have some other projects going on or I'd probably pull that schedule forward and pop for them (assuming all checks out ok with them) and pads now. Trying to keep the vehicle projects and cash outlay on a serial path, I've done things in parallel a few times and the mechanical work gets stacked up.

[FSETH]

Originally Posted by X5rolls

Thanks guys, the Stillen's look great - $800 bucks isn't as much as I was thinking they would be. These go on my list to research when I need to get brakes, I still have a fair amount of pad left at 44k miles. I'd guess I'll get 50k out of them. I have some other projects going on or I'd probably pull that schedule forward and pop for them (assuming all checks out ok with them) and pads now. Trying to keep the vehicle projects and cash outlay on a serial path, I've done things in parallel a few times and the mechanical work gets stacked up.

rolls, if you are looking for an actual performance increase, take the money you will save buying OE/Centric plain rotors, get some stainless lines, better fluid and a more aggressive pad. Direct replacement (same size as oem) drilled rotors are a downgrade in performance. Regardless of what Stillen claims.

[X5rolls]

Originally Posted by FSETH

rolls, if you are looking for an actual performance increase, take the money you will save buying OE/Centric plain rotors, get some stainless lines, better fluid and a more aggressive pad. Direct replacement (same size as oem) drilled rotors are a downgrade in performance. Regardless of what Stillen claims.

One thing I'm certain of at this point is I don't want to lose peformance. Not sure since I've not researched this at all but I'm under the impression that drilled rotors will increase the stopping performance under the most streneous circumstances.

I believe I read that there is a better release of gas or that it doesn't have a place to build up. Regardless of these claims, I can't imagine that normal or even very spirited street driving will benefit much from cross drilled or slotted. Going to the track I'm assuming one could benefit greatly with more agressive pads, higher performance fluid and stainless lines.

My goals are to not lose street performance and have a great look.

Thanks for the advice, I'll be digging into the research a bit more as time progresses. I enjoy reading technical information (not on everything) to learn the fundamentals of cars/vehicles.