FOX: 15" Race Tire or 16" Road Tire? - Lapping @ Sebring & Homestead - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 10 Old 07-20-2005, 03:02 PM Thread Starter
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FOX: 15" Race Tire or 16" Road Tire? - Lapping @ Sebring & Homestead

Hello all,

I just bought an '88 Mustang 5.0 Vert which came with 2 sets of wheels:

1st set
Weld Rodlites @ 15x7

2nd set
Plain ol' Ponies @ 16X7

The car will not be classed for competition in either roadcourse or autocross (though I may autocross it occassionally for the experience only). It will see lapping days at Sebring and Homestead via Chinmotorsports trackdays.

Question is;

Should I put some competition rubber on the 15's?
Hoosier R3S04 225/55 ZR 15

or

Should I put any of the plethora of performance rubber available for the ponies?
Any tire suggestions for a 225/55/16 size?

I used to love Nitto 555RII's for my SS, but they don't come in 225/55/16. What's comparable? Thanks in advance.


2002 Z28 SS - 460rwhp - SOLD
2005 SAAB 9-2x - Grocery Getter
1988 LX 5.0 Vert - Project 347 Road Racer (Bolt-ons and Geared for now)
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post #2 of 10 Old 07-20-2005, 08:04 PM Thread Starter
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I'm leaning towards using a 50 profile tire on the 16" ponies. Should I go with a 225 or with a 245 tire?


2002 Z28 SS - 460rwhp - SOLD
2005 SAAB 9-2x - Grocery Getter
1988 LX 5.0 Vert - Project 347 Road Racer (Bolt-ons and Geared for now)
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post #3 of 10 Old 07-20-2005, 10:48 PM
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Ideally your wheel should be close to the section width of your tire. A 225 tire is just a tic over 8 inches wide. I would not recommend going with the larger 245 unless you get 8 inch wheels.
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post #4 of 10 Old 07-21-2005, 12:27 AM
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I may be wrong, but I don't think those Rodlites are designed for open track abuse. I think they're more a light-weight drag/hot rod wheel. I would feel much safer running the Ponys on track. Oh, and I would just stick with the stock 225/55-16. Going with a 225/50 I think looks too small (just a personal feeling), and a 245/50 is really too wide (as already mentioned).

'89 GT convertible, N/A 357W, MM front susp w/425# coil-overs and Koni D/As, MM TA/PB rear setup (Koni Yellows, 390-430# springs), Stoptech 332mm / 12" Baers, MM 6 point rollbar, Maier 1.5" flared fenders & quarters, 18x9.5" front/18x10.5" rear Enkei RPF-1s (street), 18x10" CCW C-10s (track), etc...
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post #5 of 10 Old 07-21-2005, 04:48 AM
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Like Patrick Olsen said, Most Weld wheels are not designed to handle the lateral loads you will be exerting on the wheel. As far as a tire, I am very happy with the Kumho MX tire that gives me about 8/10th's of a full R tire yet lasts me about 3 times as long. It is a 220 tread wear and grips very good when warmed. It is a great compromise tire. Also, I ran an '89 fox notch for 15 years auto-xing and track days. Especially on an '88, you must-absoluley must upgrade your brakes if you are going to track it. There is a million threads about this so you should not have any problem with tech on that subject. Also, you are required roll over protection for a vert. Call Anthony at Race Car Builders of South Florida, in Stewart @ 772-219-9917-He is the best.(shameless plug). Have fun and I'll see you at Chin HMS on Aug 27th.

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Last edited by fastduo; 07-21-2005 at 04:55 AM.
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post #6 of 10 Old 07-21-2005, 08:24 AM Thread Starter
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Thanks, everyone for the responses. Clears up lots.
My plan is to install the comprehensive Maximum Motorsports Track Package sometime next year, along with a bolt-in 6pt roll bar with a removable horizontal harness bar.
For now (until I get around to doing a 5 lug conversion), I'm doing the simple Maximum Motorsports 4 lug brake upgrade (Hawk pads, shoes, stainless steel brake lines), along with wrapping some decent rubber around the ponies, just to get my feet wet.
I briefly owned a '93 5.0 notch, so I recall how horrible the stock brakes are.

Again, thanks for the respsonses, I don't know if I'll have the car track ready by Aug. 27th- if not I may just show up in the 9-2x for some laps.

Carlos.

2002 Z28 SS - 460rwhp - SOLD
2005 SAAB 9-2x - Grocery Getter
1988 LX 5.0 Vert - Project 347 Road Racer (Bolt-ons and Geared for now)
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post #7 of 10 Old 07-21-2005, 05:54 PM
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kuhmo MX 225-50-16 on the pony's. my two cents.

All bleeding stops eventually.
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post #8 of 10 Old 07-21-2005, 06:05 PM Thread Starter
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Quote:
Originally Posted by poorracerkid
kuhmo MX 225-50-16 on the pony's. my two cents.
I was just pricing them at Tire Rack as your response was being typed.

2002 Z28 SS - 460rwhp - SOLD
2005 SAAB 9-2x - Grocery Getter
1988 LX 5.0 Vert - Project 347 Road Racer (Bolt-ons and Geared for now)
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post #9 of 10 Old 07-22-2005, 08:53 AM
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I'm running 225 50 16 on my 8" ROH rims and it's a great fit (should be ok with your 7" ponies). Lower aspect ratio the better if you're going to be doing some hard cornering. I've also heard good things about the Kuhmo MX tires.

88 LX Hatchback (100K Miles), Stock Engine, B&M Shifter, SFC, ST Brace, G-Load Brace, Eibach Pro Kit, Tokico Illumina Adj, MM LCA, FRPP UCA, FRPP FCA, Mac EL Headers, Dynomax Super Turbos, Mark VII front disc, TC rear disc, ROH ZR6 16x8, Fuzion ZRi 225/50R16, Corbeau Forza DS
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post #10 of 10 Old 07-23-2005, 10:24 PM
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Ahh the 9-2x. The upscale WRX. Nice grocery getter. That will be fun on the track too.


2002 F250 Crewcab PSD, 1994 GT 331 Track Car, 2006 GT Vert weekend cruiser!
NASA, SCCA, PCA-DE Instructor
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