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Author Topic: Wheel/Tire of choice
Racer Randy Verified Driver
Junior Member

Region: Great Lakes
Car #: 4
Year : 1999 Miata
Posts: 2
Status: Offline
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What would be the preferred tire and wheel for FP? brand,size...

Randy

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Randy Shaw
'99 Spec Miata

motorrock
Member

Region: DC Region
Posts: 128
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There are a bunch of FP Miata's that run 23x9.5-15 Hoosiers or 23x9.0-15 Goodyears on Enkei RPF1's 15x7 35mm offset (9.9lbs)

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philstireservice.com
philstireservice@aol.com

RHarris Verified Driver Made Donation to Website
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Region: Wichita
Car #: 8
Year : 1992 FP
Posts: 406
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Randy,

Jesse Prather Motorsports has a custom build Spinwerks specifically for the Miata. I can't recall the price but give him a call.

The sizes motorrock lists are what most EP and FP Miata's are using.

I use the Goodyear 23x9x15 with 430 compound.

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Rick Harris
F Production - A place for 1.6 Miata's

http://www.v8roadsters.com/

http://jesseprathermotorsports.com/
http://www.wbrgraphics.com/
http://haremotorsports.blogspot.com/
2008 F Production National Champion

Racer Randy Verified Driver
Junior Member

Region: Great Lakes
Car #: 4
Year : 1999 Miata
Posts: 2
Status: Offline
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Thanks, full slicks sure seem like a blast!

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Randy Shaw
'99 Spec Miata

jprather
Member

Region: Kansas
Year : 1990
Posts: 35
Status: Offline
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They are Randy, they are.

RHarris Verified Driver Made Donation to Website
Moderator

Region: Wichita
Car #: 8
Year : 1992 FP
Posts: 406
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I have 11 used 23x9x15 Goodyear slicks that I would be willing to give a SMer. They range from 3 sessions to at the most 6 sessions.
I will be at Heartland Park Topeka this coming weekend. Let me know and I will bring them.

If you are really serious, pay for shipping and I will get them to you.

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Rick Harris
F Production - A place for 1.6 Miata's

http://www.v8roadsters.com/

http://jesseprathermotorsports.com/
http://www.wbrgraphics.com/
http://haremotorsports.blogspot.com/
2008 F Production National Champion

tyler raatz
Member

Region: atl
Car #: 10
Year : 95
Posts: 31
Status: Offline
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quote:
Originally posted by RHarris:
I have 11 used 23x9x15 Goodyear slicks that I would be willing to give a SMer. They range from 3 sessions to at the most 6 sessions.
I will be at Heartland Park Topeka this coming weekend. Let me know and I will bring them.

If you are really serious, pay for shipping and I will get them to you.

Rick, I just started on my LPFP/LPEP chassis today, I would love a set of these tires for fitment and early testing.
Do you still have any available?
Would also like to talk with you about fiberglass options. Can you send me an email with a evening phone number and a good time to chat?
Thanks
Tyler Raatz
traatz@mindspring.com
current SM and ITA driver
FP/EP miata WIP

RHarris Verified Driver Made Donation to Website
Moderator

Region: Wichita
Car #: 8
Year : 1992 FP
Posts: 406
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Tyler,

I do have some used tires that would be perfect for testing, fitment and shaking down the car. I sent you an email.

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Rick Harris
F Production - A place for 1.6 Miata's

http://www.v8roadsters.com/

http://jesseprathermotorsports.com/
http://www.wbrgraphics.com/
http://haremotorsports.blogspot.com/
2008 F Production National Champion

mtm68 Verified Driver
Member

Region: CalClub/ SFR
Car #: 67
Year : 1990
Posts: 252
Status: Offline
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Not sure if we should hijack this thread, or perhaps start a new one, but would you be willing to share some setup info on setting the car up on slicks (camber, toe, pressures, care and feeding of slicks) vs. the glorified street tires on SM cars?

thanks,
Marcus

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Marcus Miller
ITA 1.6 for sale- ish
ITE / ST2 Turbo 1.6 (in progress)

RHarris Verified Driver Made Donation to Website
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Region: Wichita
Car #: 8
Year : 1992 FP
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Marcus,

I will certainly share with you my setup on the Goodyear 23x15x9 slicks. I understand that the new Hoosier Radials will take a radically different approach to setup.
Different driving styles will certainly come into play but here is a good baseline:

Camber Front - No less than 1, no greater than 1.2
Camber Rear - No less than 1.2, no greater than 1.4
Toe Front and Back - Zero, Zero, Zero, Zero !!! ( with these big ole fat tires, you absolutely don't want any drag.
Tire Pressures - For a baseline, 17 cold PSI. I always add one PSI on the unloaded side. So I would start out 17 on one side 18 on the other. Your HOT target for these tires is no less than 24 and no more than 25.

If you have some good double adjustable shocks, then your "at" track adjustments narrows down to just two items: Tire Pressures and Shock adjustments. In the three years I have run my FP, I have never adjusted a spring perch at the track. The car should be set up at your home/shop at 50% cross weight.

ALL of my tires stay in a conditioned air environment and covered up. I will ask Sam Henry to pipe in here as he has some really good data points to compare SM tire maintenance to FP tire maintenance. I have been really blessed with contingency from Goodyear. I don't think I have ever put more than 5 sessions on a set of tires so I don't know how to care for them much pass 2 weekends.

Take a look at these two YouTube videos from Eric Prill. He was on Hoosier Radials. Notice his violent steering wheel input and then the end result at lap 10. My personal belief is that the car was just not setup for the radial tires.
http://www.youtube.com/watch?v=F2BlV8jYmY0
http://www.youtube.com/watch?v=Gs92eN_09PE

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Rick Harris
F Production - A place for 1.6 Miata's

http://www.v8roadsters.com/

http://jesseprathermotorsports.com/
http://www.wbrgraphics.com/
http://haremotorsports.blogspot.com/
2008 F Production National Champion

mtm68 Verified Driver
Member

Region: CalClub/ SFR
Car #: 67
Year : 1990
Posts: 252
Status: Offline
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Thanks Rick!

My turbo project took an odd turn as I was building for ITE in SFR (and hoosier DOTs), but with an impending move to the PNW, and a required move to SP, slicks are now an option... I'm sticking with stock body work (for now), so an 8 inch slick is a max. How about spring / bar changes or thoughts?
My IT car was on 800 front 400 rear, with SM bars & Koni race SA shocks...

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Marcus Miller
ITA 1.6 for sale- ish
ITE / ST2 Turbo 1.6 (in progress)

RHarris Verified Driver Made Donation to Website
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Region: Wichita
Car #: 8
Year : 1992 FP
Posts: 406
Status: Offline
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Most of the FP cars are running a 750 front spring with 400 rear. I use the racing beat large front bar with just the one end link hole. I am not sure how adjustable your shocks are but if you do have enough adjustment then you really don't need a rear bar at all.
The 8" slick should work great. I am actually going to test some 8" sometime next year.

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Rick Harris
F Production - A place for 1.6 Miata's

http://www.v8roadsters.com/

http://jesseprathermotorsports.com/
http://www.wbrgraphics.com/
http://haremotorsports.blogspot.com/
2008 F Production National Champion

   

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