Trying to confirm Ferodo pad part numbers for front and rear on a standard 4x4 estate, ie 16" wheels with original discs. Have come across the following

FDS1463DS2 (front)

FDS1083DS2 (rear)

do these sound right? Also, am curious about what can be achieved with brake upgrading whilst keeping the standard wheels. Are the standard wheels too restrictive or can something be done other than just replace pads?

thanks,

Adam.

The pads for the Mk1 4x4 are the same as for the Mk1 vRS if that helps - you should be able to search for something on here.

Which Ferodos are you trying to get?

And to answer your second question, the 312mm front brakes from the VAG range fit nicely under the 16" wheels

Aye, delivery miles only audi tt 312mm setup (discs, calipers and pads) can be had from Golfturbo for ~£250 delivered. So cheap i'm not sure why i haven't done it yet!

Front pads are the same but rear pad set part numbers are different, ie - 1J0 698 451 for 4X4 and 1J0 698 451C for vRS - although the pads are the same. See thread below for an explanation

I think the only difference on the rear pad kit is the shims. They are wider on the vRS as they are vented.

thanks for replies so far. Was just looking at motorsportworld.co.uk and I see Ferodo DS Performance pads there with same part numbers, front AND rear, for the 4x4 and RS. Am puzzled that these cars could share pads since how do you benefit from the larger discs in the RS if the pads are the same? Either way, just looking for an easy upgrade to reduce fade before the car gets remapped but larger discs do sound good.

Pads and calipers are the same on the 288mm and 312mm set ups. All that changes is the carrier that the caliper bolts to so it clears the larger diameter disc.

Am puzzled that these cars could share pads since how do you benefit from the larger discs in the RS if the pads are the same?

In two main ways

1) The larger discs have a greater mass, greater surface area and, in the case of the rears, are vented and so stay cooler which often means pads will work better.

2) GCSE maths , the further out (from the centre of rotation) that the force applied by the pads acts, the more effect it will have in slowing the wheel down. Think of a bicycle wheel - is it easier to stop the wheel rotating by grabbing the outside (where traditional bike brakes work), or near the hub?

And yes, the Ferodo parts are the same, as I mentioned above. Lummox's explanation sounds as good as any as to why, as DGW pointed out, the VAG part numbers differ.

In two main ways

1) The larger discs have a greater mass' date=' greater surface area and, in the case of the rears, are vented and so stay cooler which often means pads will work better.

2) GCSE maths , the further out (from the centre of rotation) that the force applied by the pads acts, the more effect it will have in slowing the wheel down. Think of a bicycle wheel - is it easier to stop the wheel rotating by grabbing the outside (where traditional bike brakes work), or near the hub?

And yes, the Ferodo parts are the same, as I mentioned above. Lummox's explanation sounds as good as any as to why, as DGW pointed out, the VAG part numbers differ.[/quote']

Well, think you just sold me on a disc upgrade! By the look of it the front discs on my 4x4 are around 288mm, does that mean they could go on the rears and all I'd need to do would be buy a pair of 312s for the front? Would that be a good mix?

Front brakes wont work on the rears as they are too wide for the caliper.

thanks to all for the advice. Now have 312mm discs on the front and Ferodo pads all round, courtesy of Jabbasport. Already running in nicely and substantial improvement on standard set up. Had the Bailey DV30 installed while I was there, seems to have sharpened response after gear changes. Am now pondering the Jabba CAI kit but from other threads on here it seems that the jury is split on the value of these.