MR2 Roadster Owners Club

The Workshop => Maintenance, Problems & Troubleshooting => Topic started by: richbay on December 4, 2005, 07:47

Title: new front brakes
Post by: richbay on December 4, 2005, 07:47
i need some new front discs, and obviously pads, what is the best route to take? standard discs with uprated pads?, standard pads better discs? or just stock,
also where is the best place to buy? are toyota pads really any better than OEM ones?
any ones opinion greatfully recieved
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Post by: kanujunkie on December 4, 2005, 10:08
IMHO the stock ones are excellent, i've done a couple of trackdays on them and yes they do fade a bit but it takes a lot, they outlasted a lot of other cars with uprated brakes. The only mod i've done to the brakes is to change the fluid to dot 5.1 to allow it to cope with the extra heat. This IMHO is one part that Mr.T got right
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Post by: Chris on December 6, 2005, 18:25
It really depends on what you plan on doing with the car and how you felt about them before i guess...

If you just pootle about and had no problems before then standard pads and discs would be the obvious answer.  Like Stu, I've also been on a few track days with standard pads and discs but uprated fluid with no serious problems...
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Post by: Jap GT300 on December 6, 2005, 19:49
I have a few sets of standard discs which you can have at a reasonable price.
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Post by: richbay on December 7, 2005, 08:03
thanks chaps, looks like standard is the way to go
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Post by: mph on December 7, 2005, 12:01
Quote from: "kanujunkie"IMHO the stock ones are excellent, i've done a couple of trackdays on them and yes they do fade a bit but it takes a lot, they outlasted a lot of other cars with uprated brakes. The only mod i've done to the brakes is to change the fluid to dot 5.1 to allow it to cope with the extra heat. This IMHO is one part that Mr.T got right
Indeed!

I would however suggest replacing the brake fluid with a high-performance DOT4 - ie Motul 600. This product has a much higher specification than 'regular' 5.1, and is still mineral-based. DOT5.1 is a synthetic compound which will require a complete flushing of the existing fluid in the system. The long-term compatibility (of the seals) using 5.1 is unknown, but probably ok.
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Post by: mph on December 7, 2005, 12:04
I should add, if upgrading your braking system, always always always upgrade all corners, never just the fronts.
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Post by: aaronjb on December 7, 2005, 12:23
Quote from: "mph"[snip]Motul 600. [snip] is still mineral-based

The Motul website appears to disagree with you there Martin:

Quote from: "Motul"100% synthetic fluid for hydraulic-actuated brake and clutch systems.

(Source:  m http://www.motul.fr/redirectuk.asp?N=1.06.06.01 (http://www.motul.fr/redirectuk.asp?N=1.06.06.01) m )

I also found the tech sheet for Motul DOT 5.1 which states it can be safely mixed with DOT 3 & 4, as long as they are non-silicone and non-mineral (admittedly I guess our standard brake fluid could very well be mineral - but in that case I would have thought the same restriction could apply to the RBF600?)
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Post by: Anonymous on December 7, 2005, 12:28
what kind of price you talking for new brake pads (stock) ???
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Post by: mph on December 7, 2005, 12:46
Quote from: "aaronjb"...The Motul website appears to disagree with you there Martin...
I also found the tech sheet for Motul DOT 5.1 which states it can be safely mixed with DOT 3 & 4, as long as they are non-silicone and non-mineral (admittedly I guess our standard brake fluid could very well be mineral - but in that case I would have thought the same restriction could apply to the RBF600?)
s:oops: :oops: s:oops:  Glad to see that you're not taking my word for it.

To clarify, my key point is that while DOT3 & DOT4 are always inter-operable, there's no such guarantee with DOT5.1. Within your reference, you'll see RBF600 specified as a DOT4 and therefore it's a 'no-brainer' as far as compatibility goes. While I'm not saying you can't use DOT5.1, they are more typically sillicone-based, and so it's just that bit more complicated.
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Post by: Two's Company on December 7, 2005, 12:53
Quote from: "daz8365"what kind of price you talking for new brake pads (stock) ???

In the region of £90.
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Post by: Anonymous on December 7, 2005, 13:01
When I replaced the pads and discs on my '2 I used http://www.speedways.co.uk/. They were very cheap and deliver next day (that is if DHL can find you   s:evil: :evil: s:evil: ). Think a set of front pads are £24.

Details of my change are in http://www.mr2roc.org/phpBB2/viewtopic.php?t=8404&highlight=brake.
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Post by: Anonymous on December 7, 2005, 13:40
Mr.T has just replaced my front discs under warrenty.  They charged me £46.26+VAT for the cost of the new pads.  Oh and they scratched and chipped the paint on my calipers for no extra charge, how nice of them!
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Post by: aaronjb on December 7, 2005, 14:17
Quote from: "mph"s:oops: :oops: s:oops:  Glad to see that you're not taking my word for it.

 s;) ;) s;)  I only went to check as I was sure that RBF600 was synthetic (I'd looked at it before now)
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Post by: Anonymous on December 7, 2005, 14:39
Yep, I used Speedways too.
£90.00 delivered for front discs and pads.
Did over 15000 miles with them before I sold the car, with no problems whatsoever.
Reccommened.
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Post by: Tem on December 7, 2005, 21:46
Quote from: "mph"To clarify, my key point is that while DOT3 & DOT4 are always inter-operable, there's no such guarantee with DOT5.1.

Yeah, some seem to have silicon based 5.1 while others have "normal" 5.1's. I never really got the idea behind that, but seems there's some difference what we call 5.1 and what they call 5.1 in US.
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Post by: mrsmr2 on December 7, 2005, 22:33
What's the going rate for stock front pads only?  Mr T have quoted me £128 all in so I thought I would look elsewhere?

Jason
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Post by: Jap GT300 on December 8, 2005, 09:11
Only £20 delivered for patents

 m http://cgi.ebay.co.uk/TOYOTA-MR2-PRIUS- ... dZViewItem (http://cgi.ebay.co.uk/TOYOTA-MR2-PRIUS-YARIS-CELICA-FRONT-BRAKE-PAD-SET_W0QQitemZ4595300209QQcategoryZ10428QQssPageNameZWDVWQQrdZ1QQcmdZViewItem) m
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Post by: mrsmr2 on December 8, 2005, 16:42
Quote from: "Jap GT300"Only £20 delivered for patents

 m http://cgi.ebay.co.uk/TOYOTA-MR2-PRIUS- ... dZViewItem (http://cgi.ebay.co.uk/TOYOTA-MR2-PRIUS-YARIS-CELICA-FRONT-BRAKE-PAD-SET_W0QQitemZ4595300209QQcategoryZ10428QQssPageNameZWDVWQQrdZ1QQcmdZViewItem) m

Wow, much cheaper.

Do we really use the same pads as a Prius and Yaris???

Jason
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Post by: Tem on December 8, 2005, 19:53
Quote from: "mrsmr2"Do we really use the same pads as a Prius and Yaris???

Yeah, we do  s:lol: :lol: s:lol:

Celica, Corolla (non T-Sports) and some other japanese only models have the same pads as well.