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New Toyo Proxes RR tire sizes

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18 replies to this topic

#1
choerizo

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I haven't looked at tires in about a year and it seems Toyo released some new sizes late last year. They now have the semi-slick RR compound tire in 20" sizes! This may be a good Hoosier alternative (and NASA approved). Anyone tried these yet? I may be willing to give it a go...

 

https://www.toyotire...oduct/proxes-rr

 

racing-tires-proxes-rr.jpg

 

 

tires.jpg

 

40 treadwear!!


Edited by choerizo, 27 August 2020 - 04:13 PM.

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#2
droptopp

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Damn 40 treadwear will be nice for the street ;)
Cicio Performance billet Crank 4.1 w/ CP billet pistons, Zenith R turbos, Cicio wet sump oling upgrade, flex fuel, ETS mid, down pipe, race FMIC, STM titanium axle back, ID2000s, Shep One K with drop gears, DS Axles, Volk Saga 18 10/12 (MT ET Streets), Advan GT Premium 20 R888. 1450+ hp / 1210+ tq

Old setups : more AMS motors than anyone I know - Alpha 9 w/ AMS 3.8, GTX3582R Gen II w/ AMS 4.1 billet crank, GTX3582R Gen II w/ AMS 4.0 big bore billet crank and of course FBO E85.

#3
Dsm_alpha

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A lot of the big power vipers run this tire and swear by it
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#4
shawnhayes

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car.jpg

 

285/35R20's all around

 

They are better than R888's

They are better than Pilot 4s's

 

I was VERY VERY pleased by both durability and performance.

 

Shawn

 


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#5
choerizo

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awesome feedback as usual. seems like the closest thing to a full on slick you can get. i'll be getting a set prior to the next track day. 



#6
shawnhayes

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awesome feedback as usual. seems like the closest thing to a full on slick you can get. i'll be getting a set prior to the next track day. 

 

You will NOT be disappointed.

 

Track tire - BEST 20' track tire I've ever had for one weekend so far.  I have one-two further weekends coming up, and we'll see how long they last.

 

Shawn


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#7
droptopp

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Anyone use these on the street ?
Cicio Performance billet Crank 4.1 w/ CP billet pistons, Zenith R turbos, Cicio wet sump oling upgrade, flex fuel, ETS mid, down pipe, race FMIC, STM titanium axle back, ID2000s, Shep One K with drop gears, DS Axles, Volk Saga 18 10/12 (MT ET Streets), Advan GT Premium 20 R888. 1450+ hp / 1210+ tq

Old setups : more AMS motors than anyone I know - Alpha 9 w/ AMS 3.8, GTX3582R Gen II w/ AMS 4.1 billet crank, GTX3582R Gen II w/ AMS 4.0 big bore billet crank and of course FBO E85.

#8
choerizo

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You will NOT be disappointed.

 

Track tire - BEST 20' track tire I've ever had for one weekend so far.  I have one-two further weekends coming up, and we'll see how long they last.

 

Shawn

 

what starting psi and target psi/temps are you getting?



#9
shawnhayes

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Anyone use these on the street ?

 

Accidentally when I had to.  Very very good.  I don't predict good wear or wet traction, but in the dry on the street (dinnertime from track), they were awesome.

 

Shawn


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#10
shawnhayes

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what starting psi and target psi/temps are you getting?

 

I screwed this up at first.  I was targeting for 40psi at the end of hot 40 minute session.  I started at 32 to get there.  Later found out that I should have been targeting 35, so I reckon I should have started at 28.

 

Nonetheless, at five pounds over target, they were AWESOME.

 

Shawn


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#11
choerizo

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Is it even worth considering 285/325 for track duty? or will the understeer offset any added grip benefits i would get from the wider tire?



#12
sam2avila

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Looks like I found my next set of tires!

#13
jhammergtr

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I normally run 18" Nitto NT01 with 1700lb max load . The RR in 285/18 have 1433 lbs max load rating. Would that be too low for our GTRs?

fyi Toyo Tires recommends the following general set-up guidelines for the Proxes RR:
Operating Temperature: 160°F to 220°F
Hot Inflation Pressures: 32 to 38 (psi)
Camber: -1° to -3°
Caster: As much positive as possible
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#14
shawnhayes

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Is it even worth considering 285/325 for track duty? or will the understeer offset any added grip benefits i would get from the wider tire?

 

You never know until you try.

 

Shawn


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#15
Johnnypbmx

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Will this be in spec fo not cause premature clutch wear? I really wanna get back on r888s but as far as i know their sizes are not in spec to keep the computers happy :-/

#16
shawnhayes

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Will this be in spec fo not cause premature clutch wear? I really wanna get back on r888s but as far as i know their sizes are not in spec to keep the computers happy :-/

 

Run a square setup.  Period.  Only way to be sure without doing a full runout.

 

Shawn


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#17
thehelix112

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Run a square setup. Period. Only way to be sure without doing a full runout.

Shawn

This.

You can make the rear oem sized wheels work on the front with spl upper control arms and adjusting the stock lower control arms in.

Dave
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#18
Johnnypbmx

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I have bbs lm gtr fitment- was thinking of trying to get 10.5” barrels up front to run square...would have to be custom though.

#19
jdmrb1

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Great tires but better look at the price and west.




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