Edmund's Evo Spec - Brake Rotors
Evolving Member
Joined: Feb 2002
Posts: 188
Likes: 0
From: Hillsboro, OR
This should give an idea of actual rotor size.
EVO VII GSR
http://www.roadraceengineering.com/r...frontwheel.jpg
http://www.roadraceengineering.com/r...-rearwheel.jpg
Mitsubishi claims 2 sets of numbers that I have read.
17" front brakes and 16" rear brakes. (in the pdf file)
14" front brakes and 12" rear brakes. (I have seen this number posted with the car at shows)
Where Mitsubishi gets these numbers...I have no idea!
I have read the theory that the 17" & 16" numbers are the maximum wheel size that will fit over the brakes. Actually, the rear rotor is so small in diameter you could probably run a 13" rear wheel before having problems. The front wheel you could run a 16" I would expect.
I sit back and read what people say in the rumor forum and take everything with a grain of salt. On the other hand, when people start getting really mislead...like thinking the EVO is gonna come here with 17" or even a 14" front brake rotor....I step in and lend a helping hand. No, I dont own an EVO, but I have been working on performance Mitsubishis for several years. I do a lot of work with larger dia rotor conversions as a performance upgrade.
I kind of wish the the GSR came with larger rotors, but at least it has vented rear rotors. The 'Brembo' factor is pretty cool as well. I have read EVO VII owners complain of warped rotors. On the other hand, that is a common complaint for many different types of sport cars.
Turbo
EVO VII GSR
http://www.roadraceengineering.com/r...frontwheel.jpg
http://www.roadraceengineering.com/r...-rearwheel.jpg
Mitsubishi claims 2 sets of numbers that I have read.
17" front brakes and 16" rear brakes. (in the pdf file)
14" front brakes and 12" rear brakes. (I have seen this number posted with the car at shows)
Where Mitsubishi gets these numbers...I have no idea!
I have read the theory that the 17" & 16" numbers are the maximum wheel size that will fit over the brakes. Actually, the rear rotor is so small in diameter you could probably run a 13" rear wheel before having problems. The front wheel you could run a 16" I would expect.
I sit back and read what people say in the rumor forum and take everything with a grain of salt. On the other hand, when people start getting really mislead...like thinking the EVO is gonna come here with 17" or even a 14" front brake rotor....I step in and lend a helping hand. No, I dont own an EVO, but I have been working on performance Mitsubishis for several years. I do a lot of work with larger dia rotor conversions as a performance upgrade.
I kind of wish the the GSR came with larger rotors, but at least it has vented rear rotors. The 'Brembo' factor is pretty cool as well. I have read EVO VII owners complain of warped rotors. On the other hand, that is a common complaint for many different types of sport cars.
Turbo
Evolved Member
Joined: Aug 2001
Posts: 1,451
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From: Earth
Show me some proof and I'll believe the 12.1" and 9.5". Until then I'll go with what I've seen on many occasions.
Any Evo 7 owners out there want to go out and measure their stock rotors? Thanks
Any Evo 7 owners out there want to go out and measure their stock rotors? Thanks
Evolving Member
Joined: Feb 2002
Posts: 188
Likes: 0
From: Hillsboro, OR
November 2001 Sport Compact Car
Page 76
EVO VI
Maybe the VI and VII have slightly different rotors? If you looked at the pics I put on the link it should be quite obvious that that is no 14" and 12" rotor.
But whatever...
Turbo
Page 76
EVO VI
Maybe the VI and VII have slightly different rotors? If you looked at the pics I put on the link it should be quite obvious that that is no 14" and 12" rotor.
But whatever...
Turbo
Evolved Member
Joined: Aug 2001
Posts: 1,451
Likes: 0
From: Earth
SCC shows the size for the Evo 6 and not the 7. But brake size did not change from 6 to 7, so I think you're right Turbo442. Thanks for clearing it up. 
12.1 in. discs up front with 4 piston caliper Brembos (plus 2 piston in back) is good enough for me.
12.1 in. discs up front with 4 piston caliper Brembos (plus 2 piston in back) is good enough for me.
Newbie
Joined: Dec 2001
Posts: 36
Likes: 0
From: N. California
Hey, all I gotta say is that a few of us are going by what the 
.pdf said. Verbatim it said "17-inch ventilated disc". Now if that is infact the rotor disk (which i must admit seems highly unlikely) or the wheel size that covers it, remains to be seen. I do agree though, if perhaps we could get some real evo owners to shed some light on this topic, it would be a great help!
heres one for everyone! (finally a icon for me!)
.pdf said. Verbatim it said "17-inch ventilated disc". Now if that is infact the rotor disk (which i must admit seems highly unlikely) or the wheel size that covers it, remains to be seen. I do agree though, if perhaps we could get some real evo owners to shed some light on this topic, it would be a great help! heres one for everyone! (finally a icon for me!)
Guest
Posts: n/a
What the ****!? Just checked the Evo 7 pdf, it says indeed 17 inch brake rotors! This is obviously a typo or a marketing gag or something. 
Last time I checked, my front discs were 320 mm in diameter which equates to approximately 12.6 inches.
Try and find a hard copy of that pdf at a Mitsubishi dealer, get it stamped or so and then sue them for reducing the promised brake disc size when you get your Evo
Newbie
Joined: Dec 2001
Posts: 36
Likes: 0
From: N. California
Hehehehe, good looking out Claudius! Glad to see I wasn't dreaming that or anything. Now 12.6, that sounds a bit more reasonable. 17"....are we trying to stop a 747 here? But once again, thanks Claudius for confirmed input!
From Evolution Imports' Website:
Brakes:
Front 320 mm Brembo ventilated discs; 4 pot aluminum calipers
Rear 300 mm Brembo ventilated discs; 2 pot aluminum calipers
ABS Sports ABS
Brakes:
Front 320 mm Brembo ventilated discs; 4 pot aluminum calipers
Rear 300 mm Brembo ventilated discs; 2 pot aluminum calipers
ABS Sports ABS
Thread Starter
Evolving Member
Joined: Apr 2002
Posts: 176
Likes: 2
From: New York... moving to Toronto soon
heheh yeah i looked at all the international official Mitsu sites and in HK, JAPAN, UK they all have 17 and 16 put down... heheh lets all sue them for new Evos.... heheheh that'll be sweet...
yeah logically thinking its kinda dumb for me to think there would have been 17 inch rotors, but maybe its just a different system of measuring, coz they won't send out typos to all their international branches and not correct them like still, after 18 months.. oh well, i'm all with the lawsuit
yeah logically thinking its kinda dumb for me to think there would have been 17 inch rotors, but maybe its just a different system of measuring, coz they won't send out typos to all their international branches and not correct them like still, after 18 months.. oh well, i'm all with the lawsuit
Guest
Posts: n/a
I meant that as a joke. I have no idea how they measure brake disc diameter in Japan, but it must be in inches or centimetres
You cant say the disc is 17 inch in diameter when the wheel is 17 inch, because having 17 inch wheels doesnt mean **** concerning brake rotor size; my mother drives a BMW 328 with 17 inch wheels, my bro has an S4 with 17 inch wheels: what does that mean to the brakes? - Jack ****! 
I have seen Japanese people in the main brewhouse in Munich (Germany), a must see on a visit to Germany. There were lots of Japanse drinking
After 1 (ONE) they were dancing on the tables! so I guess they drink beer while writing the Evo 7 brochure / .pdf!
Newbie
Joined: Dec 2001
Posts: 36
Likes: 0
From: N. California
Ok....jpn must use a different method of measurment or something. Was just messing around on the site, and looked under concept cars. For the EVO it has 14" and 12" for the front and back brakes. Either they measure things different in jpn, or just needs to get their $hit strait. 
site, and looked under concept cars. For the EVO it has 14" and 12" for the front and back brakes. Either they measure things different in jpn, or just needs to get their $hit strait.
Evolving Member
Joined: Jun 2001
Posts: 368
Likes: 0
From: Seattle
17" brakes and 16" brakes refer to the smallest wheel size that fits those brakes.
Subaru also uses nomenclature like that.
The actual size of the brakes are approximately
Front - 13.5"
Rear - 12.4"
The rear brakes are actually much bigger than the front brakes of most cars.
Subaru also uses nomenclature like that.
The actual size of the brakes are approximately
Front - 13.5"
Rear - 12.4"
The rear brakes are actually much bigger than the front brakes of most cars.
Evolving Member
Joined: Feb 2002
Posts: 188
Likes: 0
From: Hillsboro, OR
Originally posted by RA29
17" brakes and 16" brakes refer to the smallest wheel size that fits those brakes.
Subaru also uses nomenclature like that.
The actual size of the brakes are approximately
Front - 13.5"
Rear - 12.4"
The rear brakes are actually much bigger than the front brakes of most cars.
17" brakes and 16" brakes refer to the smallest wheel size that fits those brakes.
Subaru also uses nomenclature like that.
The actual size of the brakes are approximately
Front - 13.5"
Rear - 12.4"
The rear brakes are actually much bigger than the front brakes of most cars.
Problem is your approximate brake size is way off!
I will post a pic of the rear wheel/brake again:
http://www.roadraceengineering.com/r...-rearwheel.jpg