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USRS RR Racing


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I’ll need to check mine as the car can get sideways very easily at the moment. I think that’s more down to the lower mid range Yokohamas fitted on the rears by the previous owner. 

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Does anyone have any spare RR-Racing stickers/transfers they're willing to send me?
Wanted to put a couple on the car, but only have one to hand.

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6 hours ago, Toothy said:

Does anyone have any spare RR-Racing stickers/transfers they're willing to send me?
Wanted to put a couple on the car, but only have one to hand.

Sorry David, tried mine, didn’t like it so took them off, only had the two or you’d have been welcome to one.

matt

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6 hours ago, Toothy said:

Does anyone have any spare RR-Racing stickers/transfers they're willing to send me?
Wanted to put a couple on the car, but only have one to hand.

I think I have mine somewhere, let me check...

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Isn't 40+ a bit excessive? and is this 40psi measured while the tires are cold? because the temp will increase by a decent 3+4psi when they're hot. 

I set mine to 37 cold, and they climb close to 40 when the tires are hot. 

Wouldn't 46psi make the car feel like it's driving on skates? 

 

Also I'd believe at the track (1/4 mile) you'd want to set them even lower than 37 to get more tire contact on the road. 

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On 5/22/2018 at 12:58 PM, Toothy said:

Does anyone have any spare RR-Racing stickers/transfers they're willing to send me?
Wanted to put a couple on the car, but only have one to hand.

Drop me a pm with your address and I’ll send you the ones I have. 

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On 5/22/2018 at 10:06 PM, Defratos said:

Also I'd believe at the track (1/4 mile) you'd want to set them even lower than 37 to get more tire contact on the road. 

I never took my ISF to the drag strip, but at Silverstone, I kept on letting air out of my tyres to give around 40psi when up to temperature. It was only when I checked them before leaving for the journey home, the cold pressures were about 28-30! I’d never thought they’d change that much! 

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wow I guess on the track the temps increase is even greater, I've never tracked my car but have driven it around KSA and our avg temps here are anywhere from 32-36c so I wouldn't have expected the temps to increase by 10psi on the track....still good to know. 

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Has anyone fitted the RR USRS to their RCF, at a skim through the thread I think most people fitted to ISF so far (but I could easily have missed it).  Was wondering what the long term feedback is, if it's caused anyone warranty issues, and even if anyone tried the similar Figs product?

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3 hours ago, SMorris said:

Has anyone fitted the RR USRS to their RCF, at a skim through the thread I think most people fitted to ISF so far (but I could easily have missed it).  Was wondering what the long term feedback is, if it's caused anyone warranty issues, and even if anyone tried the similar Figs product?

I’ve not read that the rcf / gsf suffers the same issues as the Isf. I would imagine it could cause warranty issues for front suspension related problems.

Glad I fitted them to mine though as it made a massive difference.

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Don't bother fitting them to RCF or GSF. Lexus fixed the issue for them. No problems with uneven tyre wear etc. It is an option to fit those newer RC and GS ones to the ISF. But being Lexus parts, they are more expensive than the RR Racing ones.

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