***2012 Autocross at Barber Motosports Park**

[c-evoVIII]

Get inline pal!

[HPEVOX]

Get inline pal!

It's not even fair. He brakes like 2 full seconds after i have to lol Thinking about going with yellow stuff for next year. Reds were a big step up from HPS, but i need MOARRRR. I'm going with the 255 A6's..what you got boy?

[Sparky]

Here's one of Jordan's runs yesterday:

http://www.youtube.com/watch?v=-kYoQmH8-8o&feature=share&list=UUy41rlD7s1h2bK6bthdKUNw

[Cholewa]

Grassroots has done some testing:

http://grassrootsmotorsports.com/articles/speed-holes/

I was thinking more of a constant wheel size and varying tire sizes. I've already seen the results from wheel size changes. C&D did a good test that was very relevant to me, using a golf and going from 15-19'' wheels. I'm more interested in seeing if say, on a 16x7, the difference between the same tire in like, 195/60, 205/60, 205/55, 215/55, 215/50, 225/50, etc.

[Sparky]

I was thinking more of a constant wheel size and varying tire sizes. I've already seen the results from wheel size changes. C&D did a good test that was very relevant to me, using a golf and going from 15-19'' wheels. I'm more interested in seeing if say, on a 16x7, the difference between the same tire in like, 195/60, 205/60, 205/55, 215/55, 215/50, 225/50, etc.

That is tire dependent depending on sidewall construction. Toyo R1Rs for example don't oversize well at all. RS3s are only slightly better. Once you get into R compounds it's a different story. V710s do pretty well and with A6s it's literally as wide a tire as you can shoehorn onto the rim.

[TouringBubble]

It's not even fair. He brakes like 2 full seconds after i have to lol Thinking about going with yellow stuff for next year. Reds were a big step up from HPS, but i need MOARRRR. I'm going with the 255 A6's..what you got boy?

I like the yellow stuffs, but they still won't brake like the RX8 does. For that you need a lot less mass, or much larger brakes. Plus, Dennis probably runs some pretty aggressive pads. The Yellows are still a hybrid, much like the common Ferodo DS2500s for Evos.

And yeah ... those FTDs are nice. But I did it on street tires. =)

[Sparky]

I like the yellow stuffs, but they still won't brake like the RX8 does. For that you need a lot less mass, or much larger brakes. Plus, Dennis probably runs some pretty aggressive pads. The Yellows are still a hybrid, much like the common Ferodo DS2500s for Evos.

Nope I run ceramic pads which have less grip than stock pads but increased modulation for trail braking. As long as you can get into the ABS, better pads won't help for autox, that's a track thing where heat kills performance.

[TouringBubble]

that's true ... I have not considered that ...

The difference is all mass and tire then.

[Cholewa]

Tire is always the limiting factor in brakes. It's all about usable friction.

[HPEVOX]

I like the yellow stuffs, but they still won't brake like the RX8 does. For that you need a lot less mass, or much larger brakes. Plus, Dennis probably runs some pretty aggressive pads. The Yellows are still a hybrid, much like the common Ferodo DS2500s for Evos.

And yeah ... those FTDs are nice. But I did it on street tires. =)

Yeah i have a fat car lol. Hopefully the yellows will pair good with the Hoosiers though. Gotta see what I can do to reduce some weight without gutting my car.

[Jedi1]

Brakes? You just need a lighter car. Kill the speed with turn in and get back on it!

[kilgojr]

Just sayin', maybe you are wanting to use EBC for a specific reason, but you do get discounts on the Porterfield Brake website, 20% off Hawk and Porterfield pads if I'm not mistaken. Log on to SCCA.com and then go to your member page, look under automotive discounts and then codes are there.

If you are wanting to use EBC for a specific reason, then by all means, disregard what I am saying.

I have a skinny car. I use Hawk pads, HPplus, stops like crazy, not too much dust, they don't scream at me when I touch the brake pedal, and they last a long time. But that is just me. I like discounts too.

[Cholewa]

Just don't use HPS's, they're just dust machines that don't actually slow you down any better than stock.

[rodhx]

Actually I was pretty happy with the HPS on the Miata for a while. Noticeably better than stock at TGPR, and did not make anywhere near the dust as the Carbotechs I have now (which according to internetz wisdom are a low dust option).

On the plus side, the Carbotechs were great at TGPR and Barber, and these are their AX6 "autocross" compound, not one of the XP_ track pads. The are a definite step up from the HPS.

[HPEVOX]

I went from the stockers to HPS the first time and it was a huge downgrade on my car. It was like i lost brakes. My car weighs about 1000lbs more than yours Rod LOL. The reds were a few steps up from the hps and a step up from stock ferodos. I think i will go with the HP+.