do you have to change callipers and pads as well if upgrading to these on the bora
Yes - calipers, carriers and pads all need upgrading to use the R32 rotors. Bora V6 4Motion front rotors are 312mm, I suspect the V5 and 4-cylinder Boras have even smaller front rotors (288mm would be my guess), the R32 rotors are 334mm diameter (and thicker too - 32mm thick vs 25mm for the Bora V6 4Motion).
You can get a second-hand R32 upgrade (calipers, carriers and perhaps pads/rotors) for around $1200. I think there's a set for sale in the trading forums at present.
One thing you need to realise is that you don't get much better braking at road speeds with an upgrade of rotor size alone - there's a small advantage due to the mechanical advantage of having the calipers sitting further out, but that's probably countered by the larger unsprung mass and rotational inertia. The main advantage comes in resistance to fade over repeated stops, as the larger rotors hold more heat - most useful on a track, or perhaps under extended periods of high speed braking (coming down a high-speed hill for instance, where you're braking to keep the car from exceeding the posted limit). You're often better going for better pads and fluid if you want better day-to-day braking performance.
Last edited by Manaz; 30-08-2009 at 02:02 PM.
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As I just edited into my post - you could go for better pads and fluid for an often surprisingly effective "upgrade"
For pads, there's plenty of options. Ferodo DS2000/TS2000/Ferodo Performance are all the same as far as I'm aware, and should be decent. GSLRallySport have some QFM pads that they're offering good prices on that you could consider too.
For fluid, get Super DOT4 or DOT5.1 - they're the same thing. Don't go for DOT5 (it's not compatible with most brake systems).
When it comes time to replace your rotors, DBA do some decent rotors - their slotted street series to suit a Bora V6 4Motion are about $180 a pair for the fronts, rears are about $160 a pair - for V5/4-cylinder models you'd probably pay a little less. For around $260 a pair IIRC, you can get slotted 4000 series rotors from DBA - they're a better overall design than the standard street ones, and would probably handle a bit of light track work a little better if that's your thing.
The next step then would probably be braided lines - if you go that way, just make sure they're ADR compliant (and marked as such - if they're not marked, they're not compliant, despite what some places will try to tell you).
Nothing to see here...
is this still available? my r needs new rotors asap!
black mkIV .:R32 #001/200
04 black new beetle turbo
matt black 1970 beetle- low n slow!
Yes follow the link in my original post
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