toyo R1R track pressures - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

600supersport · 03-23-2013, 07:33 PM

This will be my first season back at trackdays (in a car) since i let the bike go and I'm curious about a good starting point for cold tire pressure to start off with an S14 on the R1R tires...hopefully some of you guys with experience with them can chime in and even anything else to do/expect like spraying the tires or driving style expectations from them and even hot psi/temps to look for.

My car weighs about 2,700 lbs, springs are 12/8 kg, 245/45/17 & 275/40/17 with about 420whp and the S15 HLSD. I was assuming starting over 30psi cold, but reading the little bit of info i've found, people are running mid-uppper 20s cold, but that's on the real light cars like the miatas/civics. I obviously have no problem with starting low and working my way up, but that just seems quite low since these supposedly have a sidewall on the softer side compared to other R compounds and i'd rather not spend an entire day finding a decent tire pressure range to work within.

I drive the car 3-5k miles on the street per summer, but I'm looking at 2 trackdays, maybe a couple time attack events (no drifting) per month this year (digital knock on wood) and i love the grip from these tires so far, good wet performance and maybe they'll last a fairly decent amount which is all why i chose them. I still have a lot to learn about the car on the track as this will be my first year on track with it. i guess im specifically interested in advice on these tires, but equally open to general advice too.

slider2828 · 03-24-2013, 12:35 AM

I would start at 30 in the morning... You need to monitor track temperatures and how the rubber reacts..... Track temps rise, so will tire pressure and the way you have alignment setup also changes tire temp therefore pressure change....

Just monitor it.... I usually like tires to be at around 34 on street and 32 on slicks... but like I said, depends on track temp.... Just monitor it and change accordingly...

I have BFG Medium slicks and also RE01R's, depends on mood.... But just monitor them.....

600supersport · 03-24-2013, 01:05 AM

thanks, i'll start with 30psi and hopefully i can tweak the camber at the track enough according to inner/outter temps to get them even throughout the tire.

slider2828 · 03-24-2013, 10:21 PM

On our cars.... adjusting camber may also screw with your toe a little... So make sure you get your toe dialed in after camber...

GeorgeWashington · 03-28-2013, 09:19 PM

I usually like tires to be at around 34 on street and 32 on slicks... but like I said, depends on track temp.... Just monitor it and change accordingly..

___________________
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03-23-2013, 07:33 PM	#1
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	toyo R1R track pressures This will be my first season back at trackdays (in a car) since i let the bike go and I'm curious about a good starting point for cold tire pressure to start off with an S14 on the R1R tires...hopefully some of you guys with experience with them can chime in and even anything else to do/expect like spraying the tires or driving style expectations from them and even hot psi/temps to look for. My car weighs about 2,700 lbs, springs are 12/8 kg, 245/45/17 & 275/40/17 with about 420whp and the S15 HLSD. I was assuming starting over 30psi cold, but reading the little bit of info i've found, people are running mid-uppper 20s cold, but that's on the real light cars like the miatas/civics. I obviously have no problem with starting low and working my way up, but that just seems quite low since these supposedly have a sidewall on the softer side compared to other R compounds and i'd rather not spend an entire day finding a decent tire pressure range to work within. I drive the car 3-5k miles on the street per summer, but I'm looking at 2 trackdays, maybe a couple time attack events (no drifting) per month this year (digital knock on wood) and i love the grip from these tires so far, good wet performance and maybe they'll last a fairly decent amount which is all why i chose them. I still have a lot to learn about the car on the track as this will be my first year on track with it. i guess im specifically interested in advice on these tires, but equally open to general advice too.

03-24-2013, 12:35 AM	#2
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,998 Trader Rating: (13) Feedback Score: 13 reviews	I would start at 30 in the morning... You need to monitor track temperatures and how the rubber reacts..... Track temps rise, so will tire pressure and the way you have alignment setup also changes tire temp therefore pressure change.... Just monitor it.... I usually like tires to be at around 34 on street and 32 on slicks... but like I said, depends on track temp.... Just monitor it and change accordingly... I have BFG Medium slicks and also RE01R's, depends on mood.... But just monitor them..... __________________ Turn and Burn!

03-24-2013, 10:21 PM	#4
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,998 Trader Rating: (13) Feedback Score: 13 reviews	On our cars.... adjusting camber may also screw with your toe a little... So make sure you get your toe dialed in after camber... __________________ Turn and Burn!

03-24-2013, 01:05 AM	#3
600supersport Zilvia Junkie Join Date: Aug 2010 Location: buffalo, ny Posts: 348 Trader Rating: (10) Feedback Score: 10 reviews	thanks, i'll start with 30psi and hopefully i can tweak the camber at the track enough according to inner/outter temps to get them even throughout the tire.

03-28-2013, 09:19 PM	#5
GeorgeWashington Join Date: Mar 2013 Location: Los Angeles World Airports 1 World Way, Los Angeles California 90045 Age: 38 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	I usually like tires to be at around 34 on street and 32 on slicks... but like I said, depends on track temp.... Just monitor it and change accordingly.. ___________________ Find great deals and reviews on discount dvd in canada at best buy here.