So, on the 996 and I suppose all cars with 4 wheel disk brakes, the calipers are mounted on the hub in a specific way. On the front wheels they are mounted behind the wheel towards the rear of the car. On the rear wheels they are mounted on the front of the hub, towards the front of the car. It is because? this keeps the weight towards the center of the car, which should improve handling? is there something about the braking itself that makes them work better in the front as a "trailing mount", and work better in the rear as a "leading mount"? it seems that for cars with some form of trailing arm suspension, having the brake mounted toward the front would help reduce the "sprung weight" since the weight is closer to the pivot point of the trailing arm (doesn't apply to 996). So this might drive the caliper position on those cars. Anybody have ideas on this question? It's been making me wonder for some years now. Thanks!
Discussion summary
YOUR RESEARCHBrake caliper mounting conventions?
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Its just packaging. It doesnt matter where the caliper grabs from a physics stand point.
Yes, packaging. The 996 has the steering outer tie rod end forward of the ball joint so there is more room for the caliper on the back. My front wheel drive cars have the tie rod end behind the ball joint so there is more room in front.
Where is the caliper mounted on a 98 built '99? That's the defining placement
I see what you are doing …..🙄
Quotes source post: 17886165
Those are hand-built cars, the calipers could be mounted almost anywhere.
Quotes source post: 17886165
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Quotes source post: 17886244
i lol'd
OMG..the things people wonder about...what does it matter...really?
its fun to think about
Thank you De Jeeper and theprf for the explanation. I get it about packaging, especially when considering that the steering rack is best positioned to the front and the tie rods will then be taking up that space.
https://www.motortrend.com/how-to/di...-on-rotor/amp/
One additional benefit is that front brake (disc) cooling via scooping/directing air coming in from the front towards the disc is more effective with a rear-mounted caliper than with a front-mounted one.
This is a source reference. Confirm exact model applicability in the original material.