15 Inch Tires (again) - FFCars.com : Factory Five Racing Discussion Forum
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post #1 of 28 (permalink) Old 01-01-2019, 03:11 PM Thread Starter
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15 Inch Tires (again)

Happy New Year everyone.

Time to resurrect that old discussion about 15 inch tires. My Firehawks are approaching 8 years old, and while they have served me well for almost 20,000 miles, I’m guessing its time to start looking for replacements. I was on the Summit site and there seems to be few choices. Mickey Thompson, Cooper Cobras, and an apparent new option is Coker Tire selling BF Goodrich Radial T/A’s. There is also a Mastercraft option, never heard of that brand.

Tire Rack only lists the Radial T/A’s in our sizes Any input from the group? My car is a street cruiser, trips, etc, no track use.

Thanks in advance

John


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post #2 of 28 (permalink) Old 01-01-2019, 03:33 PM
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I built a Mk4 for a customer a few years ago and he chose the Coopers (strictly because they said "Cobra" on the side ). FFR 15X8 & 15X9 wheels, Fox width rear, 235/60 in the front and 295/50 in the rear. Fit perfectly and have served him flawlessly for ~20K miles on his street cruiser.

Jeff

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post #3 of 28 (permalink) Old 01-01-2019, 03:43 PM Thread Starter
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Thanks Jeff, I should have mentioned that Im running the FFR Halibrands with the old IRS. FFR calls for 275s on the rear, but those are non existent.

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post #4 of 28 (permalink) Old 01-01-2019, 04:54 PM
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Thumbs up

I'm on my 4th(?) set of 15" Cooper Cobras and really like them on my old MKI. Many many miles and no problems. Agree 100% with what JKleiner posted . Just saying

hth
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post #5 of 28 (permalink) Old 01-01-2019, 09:37 PM
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I wonder if Discount tire direct would have the NT 555 in a 15". I have 275 40-17 in the NT 555 G2 and love them, no problems on normal roads. Not the best on snow, to be expected, but some times the kids want a "ride", and I can't say no.

One of the guys I see at Cars and coffee has the NT 555 drag radial on the rear, and NT 555 G2 on the front, he has had no problems with them on the road for a couple years now.

I had 8 year old G-force Sport Comp on there with fair results, they were 5 years old before I drove it.
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post #6 of 28 (permalink) Old 01-01-2019, 10:06 PM
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Quote:
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I wonder if Discount tire direct would have the NT 555 in a 15"...
Nitto does not make a them in 15"

Jeff
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post #7 of 28 (permalink) Old 01-01-2019, 10:09 PM
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On my second set of Cooper Cobras - 29K miles - no problems.
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post #8 of 28 (permalink) Old 01-01-2019, 10:46 PM
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any comments on how hard or sticky the Cooper Cobra's are? Wet performance? Occasional track use?

Paul


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post #9 of 28 (permalink) Old 01-02-2019, 01:03 PM
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John,
You and I measured my tire height compared to yours, so I realize this may not work for you; But here is the 275/60 that I purchased. I should mention that I'm running the sn95 rear end which is 3" wider than the Fox. Not sure of the dimensions of the IRS you have. As you know, my tire is too tall to allow the drop butt mod on my build, but maybe it'll fit in your wheel well.

With reference to the question about how they are in rain, I've driven mine in a pouring rain and felt very comfortable in their performance. I wasn't racing, but was on highway.

As far as the occasional track use, I haven't tried it yet. I would guess they're not ideal, but maybe okay for "occasional" fun autocross. (I'll find out soon enough)
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post #10 of 28 (permalink) Old 01-02-2019, 01:25 PM
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Mastercraft is the store brand for a large Canadian automotive/hardware store with many stores all over the country "Canadian Tire" They sell many tire brands and have their own brand as well. Mastercraft tires are mostly a lower priced tire that a friend refers to as "rim protectors"
David W

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post #11 of 28 (permalink) Old 01-02-2019, 02:11 PM Thread Starter
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Quote:
Originally Posted by DadofThree View Post
John,
You and I measured my tire height compared to yours, so I realize this may not work for you; But here is the 275/60 that I purchased. I should mention that I'm running the sn95 rear end which is 3" wider than the Fox. Not sure of the dimensions of the IRS you have. As you know, my tire is too tall to allow the drop butt mod on my build, but maybe it'll fit in your wheel well.

With reference to the question about how they are in rain, I've driven mine in a pouring rain and felt very comfortable in their performance. I wasn't racing, but was on highway.

As far as the occasional track use, I haven't tried it yet. I would guess they're not ideal, but maybe okay for "occasional" fun autocross. (I'll find out soon enough)
Thanks Dave, I did see those, but the diameter is a bit larger that the 295s and I believe that would cause some issues for me.

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post #12 of 28 (permalink) Old 01-02-2019, 04:33 PM
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The Mickey Thompson ST radials (made by Cooper Tire) are also a good 15 inch option. For the type of service you describe either the Coopers or MTs would work well. I can't speak for the Radial T/As but they are standard equipment on 15 inch Superformance Cobras if that does anything for you.
Frank
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post #13 of 28 (permalink) Old 01-02-2019, 04:48 PM
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MT SR tires used to get good reviews. 26x10 front and 26x12 rear.
Mickey Thompson | Sportsman S/R™
Anyone currently running them?
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post #14 of 28 (permalink) Old 01-02-2019, 05:21 PM
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I've been running the Mickey Thompson Sportsman S/T radials in 295/50R15 rear and 235/60R15 front for a couple seasons now. I turned the white letters in and think they look pretty good, fit well and perform adequately for a street cruiser. I don't try and fool myself that they are a 'high performance' tire. I think they are nearly identical to similar size Cooper Cobra tires.

Sean
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post #15 of 28 (permalink) Old 01-02-2019, 09:07 PM
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My buddy has MT SR tires on his Cobra with a 600 HP FE and they are terrific. They would be a good choice if you can accommodate the goofy sizes.

Frank
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post #16 of 28 (permalink) Old 01-02-2019, 09:32 PM
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I run the 15" Cooper Cobras as well. I would consider them a street tire only and not really meant for track days. Not that you CAN'T run them on occasional track days, but if you're really trying for some hot laps the lack of traction will let you down. Engine HP and how you use the throttle will also make a difference.
All that being said, I like my Coopers. I bought them for the 15" look that I wanted(with FFR Halibrands) and they look great and perform decent on the road. Never had them in the wet(I live in Albuquerque...) and they get better when warmer(cold performance is mediocre).
When mine need replacing I'll most likely go with the same thing for the road and stick with a different set of 18's for track days.

-TJ
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post #17 of 28 (permalink) Old 01-02-2019, 10:23 PM
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I've had "several set" of 15" T/A radials and "several sets" of 15" Cooper Cobra's. My vote for general street and mild performance driving in all kinds of weather would be the Coopers hands down!!! But than again I drive a lot of mileslol
hth


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post #18 of 28 (permalink) Old 01-03-2019, 02:00 AM Thread Starter
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Thanks everyone, I love the forum, so much knowledge....those S/Rs are a new option.....more reading to do...

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post #19 of 28 (permalink) Old 01-04-2019, 05:35 PM
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Nitto offers the 555R drag radial in 275/50R15 and 325/50R15. I've been running the 275's for 8 years and have really liked them. Probably not the best tire for rain or cold weather, but I tend to avoid driving on those days. Probably the stickiest option out there.
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post #20 of 28 (permalink) Old 01-05-2019, 03:30 AM Thread Starter
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Quote:
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Probably not the best tire for rain or cold weather, but I tend to avoid driving on those days. Probably the stickiest option out there.
Thanks Danny, but my nickname in our club is the rainmaker. My wife and I are known to drive ~700 miles to the NC mountains and its common to see this.


https://youtu.be/srcA8T0qpvg

So Ill be looking for some wet performance

John

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post #21 of 28 (permalink) Old 01-06-2019, 06:07 PM
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ive had cooper cobras on my mk1 for 10 yrs easy average a couple thousand miles a yr . they hook up pretty good but a little dodgey in the wet but this being the only tires ive used on this car i cannot give a comparison
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post #22 of 28 (permalink) Old 01-14-2019, 08:14 PM
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I am on my second set of MT's SR's. I only have comparison to BFG Radials. MT hook up a lot better. Cooper Cobra seem to have positive results from the guys in our Cobra Club. If doing casual racing Cooper are ok but SR's would be better IMO and others agree that have talked with. I have been in rain and seem ok but did not push to find out also. Pretty good for 15 inch tires, more choices in 17's etc. Hope this helps

Gary
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post #23 of 28 (permalink) Old 01-15-2019, 03:16 PM
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I think the Mickey Thompson ST radials are a great choice. I have tried many including the real billboards. The MTs are almost the exactly same size as the originals but labeled poorly. The MTs in the side view picture last a lot longer and have great traction. Just add some of the new "permanent" tire letters for that original look. Be sure to scuff up the letters so they look like the real ones.

https://www.tirestickers.com/shop/go...ire-lettering/
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post #24 of 28 (permalink) Old 01-15-2019, 04:29 PM
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I went with Cooper Cobras (black side out) to replace the Goodrich's on my MKII. 255-60 and 235-60. Been very happy.
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post #25 of 28 (permalink) Old 02-20-2019, 11:07 PM
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For those who have Nitto tires, is it true that there's a series of tires from them that have the same compound in a different carcass with Toyo? Not sure if it's the NT01 drag radials and the Toyo Proxes R888. How true is this?
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post #26 of 28 (permalink) Old 02-21-2019, 01:55 AM
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If BF Goodrich Radial T/As have the same tread pattern and compound as they did back in the 1980's they are terrible in the rain (down right dangerous). I would not use them.
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post #27 of 28 (permalink) Old 02-21-2019, 05:31 PM
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Goodyear Billboards are still available in 15" sizes...

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post #28 of 28 (permalink) Old 02-22-2019, 12:00 AM
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Quote:
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Goodyear Billboards are still available in 15" sizes...

Bob
True, but I haven't seen a set of them yet that are approved for street use.

To the OP-

I have no regrets replacing my 275/50-15 BFG's a few years back w/295/50 MT SR's.

That includes the 235/60's up front, too.

HTH,
Will
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