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225/45/15 & 245/40/15 Maxxis RC-1

 
Old 12-23-2014, 01:19 PM
  #101  
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Thanks for the input much appreciated.
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Old 12-23-2014, 01:31 PM
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Originally Posted by OGRacing View Post
correct me if i'm wrong but the speed chart goes in this order.
fastest
to
slowest

Hoosier
toyo rr - hankook z214 c71(soft)
toyo ra1 - hankook z214 c51 (hard)
toyo r888- maxxis rc1 - nitto nto1
hankook rs3- Bfg rival- toyo r1r

feel free to change this.. i think this is accurate.. maybe
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Old 12-23-2014, 02:51 PM
  #103  
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thanks.
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Originally Posted by Mobius View Post
Hopefully so, but let's hope it's never necessary. Experiencing your safety gear in action is ... not optimal.
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Old 12-23-2014, 08:31 PM
  #104  
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Originally Posted by OGRacing View Post
fastest
to
slowest

Hoosier
toyo rr - hankook z214 c71(soft)
toyo ra1 - hankook z214 c51 (hard)
toyo r888- maxxis rc1 - nitto nto1
hankook rs3- Bfg rival- toyo r1r

feel free to change this.. i think this is accurate.. maybe
Not correct, look at the Tire Hierarchy thread.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 12-28-2014, 01:43 AM
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Emelio how do you think the 245 will do on a 9.5 wheel?
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Old 12-28-2014, 07:38 AM
  #106  
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Originally Posted by RHD_Tarzan View Post
Emelio how do you think the 245 will do on a 9.5 wheel?
You spelled his name wrong.

It will probably work like somewhere between a 9 inch wheel and a 10 inch wheel. The tire works on both. It is just slightly better for lap times on a 10 inch wheel with a good driver.
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Old 12-30-2014, 01:44 AM
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Originally Posted by sixshooter View Post
You spelled his name wrong.

It will probably work like somewhere between a 9 inch wheel and a 10 inch wheel. The tire works on both. It is just slightly better for lap times on a 10 inch wheel with a good driver.
Do we know if the 245 rc1 on the 10" +25 fits the NB with track camber (3* front / 3.5* rear) without flares? I know they fit without much on the 9", but the 10" will make a bit more interference...hence why it's better/faster.
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Old 12-30-2014, 11:43 AM
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Originally Posted by 1999NB View Post
Do we know if the 245 rc1 on the 10" +25 fits the NB with track camber (3* front / 3.5* rear) without flares? I know they fit without much on the 9", but the 10" will make a bit more interference...hence why it's better/faster.
No flares in this pic. Flat rolled fronts, rolled rears. No pull. Most folks assume our 15x10 was optimized for 275/35 Hoosiers. Our 10's were designed around the 245 RC-1 which was still two years away. Everything just fits.

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Old 12-30-2014, 12:09 PM
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I have never understood offsets very well. Can I assume a 10", with a +10 offset will not hit my sways and TSE brake ducts, if my 9" 6ULS don't?

Thanks E!!
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Old 12-30-2014, 12:32 PM
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Originally Posted by emilio700 View Post
No flares in this pic. Flat rolled fronts, rolled rears. No pull. Most folks assume our 15x10 was optimized for 275/35 Hoosiers. Our 10's were designed around the 245 RC-1 which was still two years away. Everything just fits.

https://www.miataturbo.net/wheels-ti...3/#post1184755
Excellent - then I'll have them mounted up on the 10" ULs for an event at Laguna this weekend with fresh RC1s. I see you stated this earlier in this thread as well; sorry for the repeat. :(

Did you end up liking 36psi HOT the most? I've read "34-38psi" target pressures.

Originally Posted by tomiboy View Post
I have never understood offsets very well. Can I assume a 10", with a +10 offset will not hit my sways and TSE brake ducts, if my 9" 6ULS don't?

Thanks E!!
Your 9" 6ULs are a +36 offset; you're comparing them to a 10" +10 offset. The outer part of your 10 will sit 38mm more OUT (towards the fender) than the 9" 6UL (fender flare?). You asked about the inside though; you will have 14mm of additional INNER clearance with the 10" +10 vs the 9" +36. You've basically moved the centerline by 26mm, then added 12.5mm on each side due to the 1" larger wheel.

Last edited by 1999NB; 12-30-2014 at 01:20 PM.
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Old 12-30-2014, 02:10 PM
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Originally Posted by 1999NB View Post
Excellent - then I'll have them mounted up on the 10" ULs for an event at Laguna this weekend with fresh RC1s. I see you stated this earlier in this thread as well; sorry for the repeat. :(

Did you end up liking 36psi HOT the most? I've read "34-38psi" target pressures.



Your 9" 6ULs are a +36 offset; you're comparing them to a 10" +10 offset. The outer part of your 10 will sit 38mm more OUT (towards the fender) than the 9" 6UL (fender flare?). You asked about the inside though; you will have 14mm of additional INNER clearance with the 10" +10 vs the 9" +36. You've basically moved the centerline by 26mm, then added 12.5mm on each side due to the 1" larger wheel.
Thanks!! That is what I was hoping!
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Old 12-30-2014, 03:31 PM
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Originally Posted by tomiboy View Post
I have never understood offsets very well. Can I assume a 10", with a +10 offset will not hit my sways and TSE brake ducts, if my 9" 6ULS don't?

Thanks E!!
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Originally Posted by 1999NB View Post
Excellent - then I'll have them mounted up on the 10" ULs for an event at Laguna this weekend with fresh RC1s. I see you stated this earlier in this thread as well; sorry for the repeat. :(

Did you end up liking 36psi HOT the most? I've read "34-38psi" target pressures.
I use a pyrometer to dial in pressures.
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Old 01-07-2015, 01:01 AM
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I've been trying to find the answer to this question - are the RC-1's directional? If they are not, I can rotate them any old way, and get lots of life, and that's glorious. My two tracks pound the Left Front. Toyo RR's are directional, and must be rotated diagonally on a RWD car, which resulted in the LF/RR pair cording at the end of the season while the other pair still had a couple of events at least in them.
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Old 01-07-2015, 01:29 AM
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RC-1's not directional and not subject to tread splice weakness like the RR, Rival et.al
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Old 01-07-2015, 05:34 AM
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Aaaaah I can't wait!



Mounted pics soon hopefully
Attached Thumbnails 225/45/15 & 245/40/15 Maxxis RC-1-img_1750_zps05f63bb7.jpg  
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Old 01-07-2015, 08:12 AM
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Originally Posted by emilio700 View Post
RC-1's not directional and not subject to tread splice weakness like the RR, Rival et.al
That said, the grooves are not symmetrical, so the tires do have an outside and an inside. Can't flip them on the rim.

+1 on tread splices. Been pounding on mine, no visible splices whatsoever. I can usually get rivals to show splices in a session or two.
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Old 01-07-2015, 09:27 AM
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Originally Posted by hornetball View Post
That said, the grooves are not symmetrical, so the tires do have an outside and an inside. Can't flip them on the rim.

+1 on tread splices. Been pounding on mine, no visible splices whatsoever. I can usually get rivals to show splices in a session or two.
I don't see why it matters which way you mount them. care to enlighten? Unless maybe you use one side of your tires more than the other...which will be camber dependent.
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Old 01-07-2015, 10:17 AM
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Originally Posted by Seefo View Post
I don't see why it matters which way you mount them. care to enlighten? Unless maybe you use one side of your tires more than the other...which will be camber dependent.
The outside of the tire has a larger slick area. Tire sidewall is prominently marked "outside." My "theory" is that this was a design choice by Maxxis to try to provide the largest, slickest profile possible on the outside of the tire where most cornering loads are carried. Helps to make up for the hard compound that they use.

I wear the outside of my tires more than the inside regardless of camber. Obviously, aggressive camber helps to reduce the difference. I've got as much front camber as I can get on the car without going to offset bushings/adjustable length control arms/etc.
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Old 01-07-2015, 11:57 AM
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If you wear the outside significantly faster than the inside, wouldn't you extend the life of the tire by flipping them inside-out? I've done this with my NT-01s (and RA-1s before that). I understand that it might not be optimal, but the tread will be semi-slick across the surface by then anyway.
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Old 01-07-2015, 12:00 PM
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I decided to paint the letters on mine while I'm waiting for my RS3's to completely wear out. Probably going to do 2-3 more autocross events on the RS3's before I mount the 245's

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