N54Tech.com - International Turbo Racing Discussion
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pajuis pajuis is offline
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Default R888 Tire Pressure - 08-23-2016, 12:13 PM

Anyone running R888's? I would like to know what tire pressure works the best at the drag strip. Any help would be appreciated.


2007 E90 Jet Black/ VRSF 7" FMIC/ VRSF CP/ VRSF lower CP/ HKS BOV/ VRSF **'s/ AFE Stage 2 CAI/ AFE Catback/ Dual Oil Coolers/ Fuel-it Stage 2 LPFP/ MMP inlets/ MMP outlets/ MMP Stage 3 Turbos/ MMP Port Injection/ BMS Catch Can/ RB PCV/ NGK's 5992 @ .018/ Alpina Flash/ MHD/ Split Second AIC6/ Wedge E50 Tuned/ 19" Niche M116 Wheels/ Toyo R888's & Toyo T1R's/ H&R Springs/ CSL Trunk/ M3 Rep front bumper with M3 ducts/ Cyba Scoops/ Custom headlights, Custom Tail Lights/ JVC HU with backup camera/ amp
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Default 09-03-2016, 07:01 PM

Even though no one responded, I'll share with you that the tires like about 36psi cold. Did a few test runs and they hook great!


2007 E90 Jet Black/ VRSF 7" FMIC/ VRSF CP/ VRSF lower CP/ HKS BOV/ VRSF **'s/ AFE Stage 2 CAI/ AFE Catback/ Dual Oil Coolers/ Fuel-it Stage 2 LPFP/ MMP inlets/ MMP outlets/ MMP Stage 3 Turbos/ MMP Port Injection/ BMS Catch Can/ RB PCV/ NGK's 5992 @ .018/ Alpina Flash/ MHD/ Split Second AIC6/ Wedge E50 Tuned/ 19" Niche M116 Wheels/ Toyo R888's & Toyo T1R's/ H&R Springs/ CSL Trunk/ M3 Rep front bumper with M3 ducts/ Cyba Scoops/ Custom headlights, Custom Tail Lights/ JVC HU with backup camera/ amp
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Default 09-03-2016, 09:44 PM

For the drag mine hook best at 25
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Default 09-03-2016, 09:45 PM

Hoosiers like around 20
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Default 09-04-2016, 11:05 PM

I was at Big Euro today in San Diego and many were running these tires. Talked to a few guys and heard anything from 28-36psi. I'll keep experimenting, thanks.


2007 E90 Jet Black/ VRSF 7" FMIC/ VRSF CP/ VRSF lower CP/ HKS BOV/ VRSF **'s/ AFE Stage 2 CAI/ AFE Catback/ Dual Oil Coolers/ Fuel-it Stage 2 LPFP/ MMP inlets/ MMP outlets/ MMP Stage 3 Turbos/ MMP Port Injection/ BMS Catch Can/ RB PCV/ NGK's 5992 @ .018/ Alpina Flash/ MHD/ Split Second AIC6/ Wedge E50 Tuned/ 19" Niche M116 Wheels/ Toyo R888's & Toyo T1R's/ H&R Springs/ CSL Trunk/ M3 Rep front bumper with M3 ducts/ Cyba Scoops/ Custom headlights, Custom Tail Lights/ JVC HU with backup camera/ amp
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RCB RCB is offline
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Default 09-06-2016, 06:27 PM

I took our GTR to the track Friday night and came to the conclusion that R888 is the next mod. I have them on the Supra and love them. Most GTR guys seem to run them at 25-26psi at the drag strip. I know it's not a direct answer since its a differant car but it should help give you an idea.


2008 E61 535xit MHD, VRSF CP, Tial BOV, DCI, RB Inlets and Outlets, VRSF 7"FMIC, Custom ***, BMS OCC, RB External PCV, M5 seats, LED interior/DRL, 20" Style 128 wheels, KWv3, M5 steering wheel, M-Sport conversion, Bimmer-Tech HD/Apple TV, RB Twos

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rednose rednose is offline
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Default 11-03-2016, 05:42 PM

I run these on my XR6 Turbo, car has 500 rwkw at the wheels and weighs 4000lbs inc driver.

I found 25-26psi cold was the sweet spot.
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Default 03-01-2017, 12:21 PM

36 psi seems really high if you're going for max traction. I'd think something in the mid-high 20's. (25-29 psi). I'd suggest starting at 30 psi on a run, letting 1-2 psi out and trying again. I wouldn't go by feel, go by the 60 ft times.


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anthracite anthracite is offline
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Default 06-23-2017, 08:23 AM

For max traction go mid 20s like everyone else suggested.

Steve
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Default 06-23-2017, 08:38 AM

28 psi seems to work good.
Thanks


2007 E90 Jet Black/ VRSF 7" FMIC/ VRSF CP/ VRSF lower CP/ HKS BOV/ VRSF **'s/ AFE Stage 2 CAI/ AFE Catback/ Dual Oil Coolers/ Fuel-it Stage 2 LPFP/ MMP inlets/ MMP outlets/ MMP Stage 3 Turbos/ MMP Port Injection/ BMS Catch Can/ RB PCV/ NGK's 5992 @ .018/ Alpina Flash/ MHD/ Split Second AIC6/ Wedge E50 Tuned/ 19" Niche M116 Wheels/ Toyo R888's & Toyo T1R's/ H&R Springs/ CSL Trunk/ M3 Rep front bumper with M3 ducts/ Cyba Scoops/ Custom headlights, Custom Tail Lights/ JVC HU with backup camera/ amp
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Default 07-05-2017, 09:14 AM

Ive had many different dr from mt to hoosier and now nittos my buddy runs tge r888 on a fwd turbo car. We run 17psi. When you warm them up the heat will bring it to 20psi +-1. For drag racing less is best to an extent without compramising safety. On full slicks people run 7-10 psi before the burn out. Anything over 25psi is not ideal for traction. However if you don't have severe traction issues running 25+ psi is not a bad thing. If your spinning just bring it down some more psi.


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Default 07-05-2017, 09:55 AM

Quote:
Originally Posted by goldfz8
Ive had many different dr from mt to hoosier and now nittos my buddy runs tge r888 on a fwd turbo car. We run 17psi. When you warm them up the heat will bring it to 20psi +-1. For drag racing less is best to an extent without compramising safety. On full slicks people run 7-10 psi before the burn out. Anything over 25psi is not ideal for traction. However if you don't have severe traction issues running 25+ psi is not a bad thing. If your spinning just bring it down some more psi.

Awesome info, I appreciate the help. I'm getting PI soon and I think I will need to start experimenting again with lower pressures.


2007 E90 Jet Black/ VRSF 7" FMIC/ VRSF CP/ VRSF lower CP/ HKS BOV/ VRSF **'s/ AFE Stage 2 CAI/ AFE Catback/ Dual Oil Coolers/ Fuel-it Stage 2 LPFP/ MMP inlets/ MMP outlets/ MMP Stage 3 Turbos/ MMP Port Injection/ BMS Catch Can/ RB PCV/ NGK's 5992 @ .018/ Alpina Flash/ MHD/ Split Second AIC6/ Wedge E50 Tuned/ 19" Niche M116 Wheels/ Toyo R888's & Toyo T1R's/ H&R Springs/ CSL Trunk/ M3 Rep front bumper with M3 ducts/ Cyba Scoops/ Custom headlights, Custom Tail Lights/ JVC HU with backup camera/ amp
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