Race Tracking Your Supra - Information exchange

[Rensuhlo]

Picking up an AT 3.0 Premium from a friend whom finally got his Porsche allocation. I've got about 10 track days under my belt with another car. Hoping to keep the Supra as stock as possible, while still getting some DE time in (~2-3days/mo).

I'm in the SE, which sees some 90+ humid days. Is the stock cooling enough for that assuming I don't tune? I did some searching and it seems like a few people have had heat soak with a stock setup but most are fine?

I'll be putting Castrol SRF in before my first track day. Will the stock tires (~8k road miles) and pads survive one or two track days? It'll also be at a new track, so my pace will probably be on the slower end.

For next season:

Are CSG C21/C11s fine for street as well as track? I'm fine with the noise, I used to run Pagid RST 3s on my old car. But I know sometimes track pads can have zero cold bite.

Lastly, any recommended tire to replace the stock that do alright for dual duty? Cup 2s? I'll probably swap to a square setup after a season and run more street friendly set on the stocks and some 200TW on the track tires. But, I'd like to get a few track days before I start buying a lot of other stuff. Or at least until I sell off my old car's race spares.

These are all covered at length in the tracking subforum you're currently visiting. I'd recommend spending some time getting familiar with this forums search quirks.


I run the CSG pads on and off the track. Accelerated wear off track due to suboptimal heat ranges. But otherwise they're fine.

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[tomfree]

I'll be putting Castrol SRF in before my first track day. Will the stock tires (~8k road miles) and pads survive one or two track days? It'll also be at a new track, so my pace will probably be on the slower end.

For next season:

Are CSG C21/C11s fine for street as well as track? I'm fine with the noise, I used to run Pagid RST 3s on my old car. But I know sometimes track pads can have zero cold bite.

Lastly, any recommended tire to replace the stock that do alright for dual duty? Cup 2s? I'll probably swap to a square setup after a season and run more street friendly set on the stocks and some 200TW on the track tires. But, I'd like to get a few track days before I start buying a lot of other stuff. Or at least until I sell off my old car's race spares.

SRF - I highly recommend it and have good experience with it so far. Endless is another good choice - I think Razorlab runs Endless.

Yes, CSG 21/11 are fine for street. They're loud and they dust, but EVERY race pad on the street does that. Dead cold bite requires a teeny bit more pedal pressure from you, but after the first time you hit the pedal, you don't think about it again. I have about 6500 miles on mine, most of that being street. Another good option is Project Mu pads...again, Razorlab runs those, and I'll probably try those when my CSGs die. WAY less expensive.

I'd just get a set of 200TW and use for dual duty. They're plenty streetable, and especially if you're still on a mostly stock suspension. Get your square setup and just keep them on the car :-D My pristine factory wheels/tires with 4K miles on them have been sitting in the basement for 7 months. I've had the "track" wheels on since April.

 

[Yli]

I saw bmw guys switiching to 75w140

ND Miata folk run this as well for their glass transmissions. 1 & 2 are stiff when the car is cold but it loosens up in ~10-15min or so.

 

[kyle9]

Thats why I aak, @razorlab using stock weight 75w90 for diff, I saw bmw guys switiching to 75w140. So dunno what should be better for mixed track/road...

iirc 75w140 is the standard bmw m-car diff fluid weight.

our car uses the same m-performance diff, so we're essentially just switching to the "track spec" fluid that is recommended by bmw.

I'm sure the 75w90 works okay as well.

it's kinda like arguing 5w30 vs 5w40... they both work well as long as you stay in the operating range and they're both better than the 0w20 that came in the car.

 

[razorlab]

iirc 75w140 is the standard bmw m-car diff fluid weight.

our car uses the same m-performance diff, so we're essentially just switching to the "track spec" fluid that is recommended by bmw.

I'm sure the 75w90 works okay as well.

it's kinda like arguing 5w30 vs 5w40... they both work well as long as you stay in the operating range and they're both better than the 0w20 that came in the car.

The Supra doesn’t have the same diff as the M cars. Completely different casing, mounts and cover.

I do plan on going heavier next change.

 

[Evolution]

The first quarter of 2023 would like a word with you

I would like to have a word with the first quarter of 2023 as well. It was highly confused!

I think he was being sarcastic towards my comment..rightfully so. I still have trouble connecting rain and socal in my mind after spending so many years with no water...and car washes swearing to jesus that they are using well water and cities literally driving around in vans handing out tickets to residents who water their lawn more than once/twice a week.

You really had to bring back up the drought years didnt you!? I got cited for my sprinklers coming on a hour too late. This was thanks to a power outage over the night and my sprinkler timer resetting. They didnt care....

Good news for today is that my replacement set of Ohlins is due to arrive. Going to rob the one dampers out of the box that I need and head over to the body shop to drop it off. So got that and the remaining Verus parts to fix my top hat and they should start assembling my car finally! Might actually get it back before the year is over.

 

[Islindur]

The Supra doesn’t have the same diff as the M cars. Completely different casing, mounts and cover.

I do plan on going heavier next change.

I red its M2 diff adapted for Supra, but an ///M diff, no?

So, Motul Gear 300 75w140 but standard or LS for diff?

 

[razorlab]

I red its M2 diff adapted for Supra, but an ///M diff, no?

So, Motul Gear 300 75w140 but standard or LS for diff?

Maybe the insides? The actual casing is 100% different on both F-Series M and G-Series M. The casing has the diff cover on the bottom. Ours is in the back, more like the E9X M's.

 

[kaj]

Yes, CSG 21/11 are fine for street. They're loud and they dust, but EVERY race pad on the street does that.

Hear that, @razorlab ? That dusting is completely normal. ?

 

[kyle9]

The Supra doesn’t have the same diff as the M cars. Completely different casing, mounts and cover.

I do plan on going heavier next change.

Yeah, the assembly is different, along with the axels and driveshaft but I think the actual diff (gears) are the same. At least that's what one of the shops that builds BMW diffs told me.

 

[Evolution]

So the downside to Ohlins is that if you need individual parts, you are waiting a month for them to come in from Sweden. No one stocks them in the US. If you are on a time crunch like me, it forced me to buy a full set just for 2 parts....

Good news for you guys is that when the replacement parts come in to replace the ones I robbed, I will have a brand new set of Ohlins for sale for cheap! You just have to wait another 3 weeks or so...

 

[Rensuhlo]

So the downside to Ohlins is that if you need individual parts, you are waiting a month for them to come in from Sweden. No one stocks them in the US. If you are on a time crunch like me, it forced me to buy a full set just for 2 parts....

Good news for you guys is that when the replacement parts come in to replace the ones I robbed, I will have a brand new set of Ohlins for sale for cheap! You just have to wait another 3 weeks or so...

....how much we talkin'?

 

[Evolution]

....how much we talkin'?

Probably around a tax free 2500 number.

 

[Islindur]

So the downside to Ohlins is that if you need individual parts, you are waiting a month for them to come in from Sweden. No one stocks them in the US. If you are on a time crunch like me, it forced me to buy a full set just for 2 parts....

Good news for you guys is that when the replacement parts come in to replace the ones I robbed, I will have a brand new set of Ohlins for sale for cheap! You just have to wait another 3 weeks or so...

What happened?

 

[tomfree]

Hear that, @razorlab ? That dusting is completely normal. ?

So...I guess I'll make a less sweeping statement and qualify it a little. Every set of Hawk, Carbotech, Raybestos, and CSG race pads that I've ever used on the street dusted like a mofo.

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