Originally Posted by howler
I spoke to Eric at Dinan yesterday after you posted this note concerning the Dinan brake package.
He confirmed that the only modification to the standard Brembo system is they changed the pads and went with slotted rotors.
Since Dinan discounted the package 20% (anniversary sale) and they warranty thier products as BMW does, I am still happy I purchased the Dinan F/R brake package.
Maybe not an extensively modified system, but a good price on a proven system.
I agree absolutely. I sell that system too (the Brembo branded one). In fact, it's the system I have on my own car, but with different pads. I went with Pagid RS421 Blue instead of the Hawk HPS to firm up the pedal. I also went with slotted rotors instead of drilled.
If you want to hang on to your stock M5 wheels, it's the only option. 3mm spacers front and rear and you're good to go. The StopTech 4-wheel kit simply does not fit under the stock rear wheels. It fits the front wheels with no spacers, but that doesn't help if you're going for the 4-wheel kit.
So neither kit is a slam dunk. You need to make two columns and decide how important each category is to your decision.
StopTech wins on price
. Normally it is $4995 and Dinan/Brembo is $6090. With my sale, StopTech is $3995. Dinan was 20% off during their terrific anniversary sale as long as they installed it for you. Their 50 units of expensive labor may offset some of your savings.
Brembo wins on wheel fitment for the 4-wheel kit
. With 3mm spacers all around it will fit factory M5 wheels.
StopTech wins on wheel fitment for the front-only kit
. No spacers required at all.
is a tie for the 4-wheel kits. For the 2-wheel kit, StopTech wins since the caliper pistons are smaller to balance the stock rear brakes.
is StopTech. Both the front-only and the 4-wheel StopTech kits give better pedal feel than the Brembo kit. Use of a more aggressive pad (such as Pagid RS421) will improve the Brembo pedal feel, but it's still much softer than the StopTech.
is controversial. Some folks like the Brembo logo better than the StopTech logo. Some folks don't like that the Brembo rear calipers and rotors are smaller than the front whereas the StopTech calipers and rotors are the same size front and rear. (Rear pistons are smaller.)
is a tie. Neither kit is easier or harder to install. StopTech instructions are better, since they are specific to the car. But if a professional installer is doing the job, he/she won't read instructions! There is a little extra wire splicing and soldering on the Brembo kit when you defeat the pad wear sensors. Or you can just coil them up and tie-wrap them out of the way. The stock pad wear sensors plug right into the pads on the StopTech brakes, retaining the dash warning for low pads.
the advantage goes to StopTech. I wouldn't give this category much weight if the car is only street driven, as your rotors should last a very long time. But for track driven cars, a spare set of rotors, hats, and float hardware (pre-assembled) is $899 from StopTech and nearly $2,000 from Brembo. Street pads for the StopTech are $73/set and are the same front and rear. For Brembo, street pads are $119 in front (or $259 if you choose the Pagid Blue RS421 pads I have on mine!) and $122 in back. A wide variety of track pads are available for both, although it gets a bit more challenging to find matched front and rear track pads for the Brembo, since the pad shapes are different.