» Site Navigation | | » Recent Threads | 1999 M3 Swap 09-07-2023 10:10 PM 06-01-2024 03:04 PM 7 Replies, 409,524 Views | | My 318ti build 05-21-2024 04:48 PM 05-28-2024 06:42 PM 1 Replies, 3,284 Views | | OMG!OMG! 05-28-2024 08:53 AM 05-28-2024 08:53 AM 0 Replies, 1,258 Views | | | | | | 01-14-2007, 01:01 AM | #1 | Senior Member Join Date: Apr 2006 Location: dorchester Posts: 700 | grooved, cross drilled or dimpled thoughts please!? hay guys....input please.... Would u go for grooved, dimpled or cross drilled or a mixture of the above? Personally i like dimpled and grooved..look good and less prone to stress fractures then the cross drilled..(just having probs finding any!!) | | | 01-14-2007, 01:55 AM | #2 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | Quote: Originally Posted by oakley hay guys....input please.... Would u go for grooved, dimpled or cross drilled or a mixture of the above? Personally i like dimpled and grooved..look good and less prone to stress fractures then the cross drilled..(just having probs finding any!!) | I'd go with OE blanks. WTF is dimpled? If you are going for looks, drilled as long as you buy a quality brand. __________________ ...steven BMW CCA #146825 1996 BMW 328ti 2003 MINI Cooper S 2016 M235i www.bmwcca.org | | | 01-14-2007, 02:53 AM | #3 | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 | Quote: Originally Posted by 1996 328ti I'd go with OE blanks. WTF is dimpled? If you are going for looks, drilled as long as you buy a quality brand. | +1 Slotting, grooving and dimples just wear the pads down faster. Still with OEM blanks for best results. __________________ '99 Dinan M3 | | | 01-14-2007, 02:18 AM | #4 | Senior Member Join Date: Apr 2006 Location: dorchester Posts: 700 | dimpled are exactly wot they say on the tin!! they have the dimples to cool and remove debris but the hole doesnt go all the way through an thus are stronger but with the same benefits...Def dont want oem blanks, i like the look (and performance) of upgraded | | | 01-14-2007, 02:28 AM | #5 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | Slotted and Vented ATE Power slot disks, Made in Germany. Quote: Originally Posted by oakley dimpled are exactly wot they say on the tin!! they have the dimples to cool and remove debris but the hole doesnt go all the way through an thus are stronger but with the same benefits...Def dont want oem blanks, i like the look (and performance) of upgraded | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 01-14-2007, 03:13 AM | #6 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | Quote: Originally Posted by oakley dimpled are exactly wot they say on the tin!! they have the dimples to cool and remove debris but the hole doesnt go all the way through an thus are stronger but with the same benefits...Def dont want oem blanks, i like the look (and performance) of upgraded | I can't figure what dimples would do. Wouldn't they fill up with dust and dirt? What performance to you get with drilled and/or grooved? If you like the look, fine. Don't kid yourself regarding performance. Quality pads and sticky tires will stop you far faster than any kind of rotor. To me stopping distance = performance. I have yet to cook my brakes with OE blanks. Edit: One of the first sites I found 'dimpled rotors'. http://www.buybrakes.com/prostop/dimpled.html Quote: Designed for the performance enthusiast who wants the "look" of a cross drilled brake rotor without the inherent cracking problems, Power Slot's Pro Stop rotors give you the best of both worlds. Pro Stop rotors are machined with our highly effective Vac-U-Slot design and enhanced with a series of "dimples" that look like drilled holes. As the brake pad contacts the rotor, the dimples turn black, simulating the cross-drilled look. | Come on. Just read it. The look of cross drilled without cracking problems. It's a gimmick. Nothing performance about it. Strictly show. But that's what you are looking for, OK. I prefer function over style. __________________ ...steven BMW CCA #146825 1996 BMW 328ti 2003 MINI Cooper S 2016 M235i www.bmwcca.org | | | 01-14-2007, 03:26 AM | #7 | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 | Anything that reduces the surface area that the brake pad has with the rotor is going to negatively affect your braking. Cross drilling, slotting and dimples are take away rotor surface area. It's simple physics. __________________ '99 Dinan M3 | | | 01-14-2007, 03:32 AM | #8 | Member Join Date: Jul 2004 Location: Orlando/ UCF Posts: 52 | Just to add my two cents... as ive seen BMW knows how to make their brakes most effective, but their newer cars have drilled brakes. So if they really didn't work then... Why would they have them on the M3 CS, M5, M6, and MZ4 Coupe. I don't know, just putting in my two cents. Moreover I know I had the luck of doing a panic stop from about 90mph. By the time I stopped my front brakes were smoking. My car is a '96 and has the solid front roters, but anyway just figured I would put in my thoughts. | | | 01-14-2007, 03:50 AM | #9 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | Drilled are mostly for looks. Including Porsche! A lot of the cheaper drilled rotors are just that, drilled. Not cast. Your brakes smoking had nothing to do with your rotors. Most likely it was the gas in the pads and I'm willing to bet must people here haven't changed their brake fluid in years. I am hard on my brakes doing 115 MPH every lap. Only time my brakes smoke is when I don't bed them in properly. __________________ ...steven BMW CCA #146825 1996 BMW 328ti 2003 MINI Cooper S 2016 M235i www.bmwcca.org | | | 01-14-2007, 02:31 PM | #10 | Senior Member Join Date: Apr 2006 Location: dorchester Posts: 700 | dissagree completely...i put dimpled and cross drilled on my '46 and the difference is huge compared to oem brakes..as for them being just for asthetics...ummm nooooo hence ALL high powered vehs use them..for me however yes purely is athestic clearly with a little 1.9! | | | 01-14-2007, 03:55 PM | #11 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | Quote: Originally Posted by oakley dissagree completely...i put dimpled and cross drilled on my '46 and the difference is huge compared to oem brakes..as for them being just for asthetics...ummm nooooo hence ALL high powered vehs use them..for me however yes purely is athestic clearly with a little 1.9! | Then go for it. __________________ ...steven BMW CCA #146825 1996 BMW 328ti 2003 MINI Cooper S 2016 M235i www.bmwcca.org | | | 01-14-2007, 10:30 PM | #12 | Senior Member Join Date: Aug 2004 Location: state college, pa Posts: 3,431 | Quote: Originally Posted by oakley dissagree completely...i put dimpled and cross drilled on my '46 and the difference is huge compared to oem brakes..as for them being just for asthetics...ummm nooooo hence ALL high powered vehs use them..for me however yes purely is athestic clearly with a little 1.9! | The difference you noticed was probably because you went from worn down pads/rotors to new ones, not because of any "performance advantage" of the dimples. If you're going for the look, that's all you, but don't claim any advantage over solid rotors. Proof? Decide for yourself: The infamous altimas.net thread __________________ I scream, you scream, we all scream for ZOMBIES. | | | 01-14-2007, 10:33 PM | #13 | Senior Member Join Date: Apr 2006 Location: dorchester Posts: 700 | nope my pads and discs were brand new (approx 300miles i think) when i replaced em..... | | | 01-14-2007, 11:52 PM | #14 | Senior Member Join Date: Jun 2003 Location: Greenville, SC Posts: 9,356 | Quote: Originally Posted by oakley nope my pads and discs were brand new (approx 300miles i think) when i replaced em..... | And probably never bedded in properly. DIMPLES ARE PURELY TO SIMULATE DRILLED. THEY SERVE ABSOLUTELY NO PURPOSE OTHER THAN LOOKS. __________________ ...steven BMW CCA #146825 1996 BMW 328ti 2003 MINI Cooper S 2016 M235i www.bmwcca.org | | | 01-15-2007, 02:54 AM | #15 | Senior Member Join Date: Aug 2004 Location: state college, pa Posts: 3,431 | Quote: Originally Posted by 1996 328ti DIMPLES ARE PURELY TO SIMULATE DRILLED. THEY SERVE ABSOLUTELY NO PURPOSE OTHER THAN LOOKS. | Unless the pads you are using are from the early 1970s. Cross-drilling, slotting, and dimpling are artifacts of engineering to solve a problem that no longer exists with modern brake pads. They are an aesthetic holdover. If you claim that it looks good, you're spot on. If you claim you're stopping any faster, you sir (or madam), have a car that defies the laws of physics. __________________ I scream, you scream, we all scream for ZOMBIES. | | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |