I'm trying to source brake rotors for my 02 sport and I'm getting conflicting info. Some part stores list a 300mm rotor some list 320mm rotor which is it?

I was never aware the sport has larger brakes then a regular s-type.

 

I have a 2003 Sport 3.0, and it has the larger front rotors. I believe that all sport editions had the larger front rotors.

 

Yes the sport should have the 320mm rotors.

I was able to measure mine with the wheels on just to be certain, but even if you have to take a wheel off, I'd suggest checking, it's better than ordering the wrong discs and all the hassle that would create and only needs a half hour.

 

Do they use different calipers and pads too? Never realized there was a difference.

George

 

no the rotors are larger, but the pads and calipers are the same. The calipers are moved out more and with the use of a larger rotor, increases leverage and brake force. And you do need to measure, just like R's doesnt meen you have Brembo's if you have an R, no larger rotors for a Sport ed

 

The dealership said they were intermixed randomly no direct package dictates 300 or 320. It's just what that had at the time on the assembly line. Which doesn't make sense to me. It doesn't appear that I have brembo calipers. Did they mix bembo rotors with none brembo calipers?

 

So does the caliper carrier bracket change (to relocate the caliper) or can you randomly add 320mm rotors to any S-type.

George

 

I think the dealership is talking pish.

In 2002, Jaguar began offering a sport package for the S-Type. The package includes front sport seats (eight-way power adjustment for the driver), a sport steering wheel, a Computer Active Technology Suspension (CATS), larger front brake discs, 17-inch wheels and slight interior and exterior trim differences

http://www.insideline.com/jaguar/s-t...ar-s-type.html

 

Which makes sense since my s type has alot less wood trim then the regular s type.

Seems like autozone, rock auto, pep boys, oreillys, and napa only list a 300mm rotors of an 02 but a 320 for an 03 so should I buy the later year rotors since mine is a sport?

 

you can change to the larger brake caliper bracket, I would search a junk yard since I dont think Jaguar offers it seperate from a new caliper. This allows you to use the 320 disc and increase brake force.

 

NO theyre not, no more random than thinking any Jaguar "R" model came with Brembo brake standard(they dont)
I would always measure, there is no rhyme or reason to what Jag does at times. I have over the years seen stuff on cars theyre not supposed to have, and others that were supposed to and don't
That said, you can always use 300mm disc on the 320 sized but not the other way around. Ive seen it done believe it or not...The outer pad misses the rotor by 20mm, when you look for material left youll see a nice big ridge on unused pad
Funny thing is, no one has ever complained about the reduced braking or noticed

 

Brutal,

Interesting info; what calipers came on STR models that didn't receive Brembos? Are the rotors the same on Brembo and non-Brembo STRs?

Ben

 

Well they are as far as I'm concerned. let's have a poll, can we do that here?
My S Type sport has 320mm discs as it should who has a sport with 300mm discs? Stand up and be counted.

 

The later STRs (2006) don't have Brembo. The calipers are smaller. The rotors are smaller (355mm not 365mm). Oh, why don't I post the Technical Guide

 

good info.

My 06 STR breaks are some of the best I have ever used.
Made by Jag and very easy to service. The dealer says the pads and rotors are lower priced than the Brembo and there no longer is the parking brake pads that can be expensive and only available at the dealer.
The calipers are speced smaller but looking at them you can't see noticable difference,rotors as well.
I had mine apart for inspection. They are very straight forward and the single piston is easy to retract

 

Thank You JagV8!!!! I have not seen this before!!

It amazing that for years everybody went to larger rotors and multiple piston calipers for better braking performance and then Jaguar goes back to the old standard single piston calipers like 98%+ of the cars on the road today?
.
.
.

 

brembos will still outperform, its all about costs on both ends. The cost to build with cheaper and less components, and lower cost for brake maintenance...
Also there are issues with customers that dont understand the "feel" of a fixed caliper design and the "feedback" you will feel through the pedal, and the inability of techs, advisors or sales people to explain it.
Ill take brembos anyday and accept the trade offs

 

That's funny, my bare bones basic 05 has dual piston calipers on the front...I find it strange that the R would be single piston....

 

I know, sounds funny.
Read the spec sheet Jagv8 posted above^

 

I did... I wasn't questioning you I just thought it was strange, sorry if it sounded that way.

Funny thing is I didn't notice the first time is they went to single piston on the base car as well....