Cheap 275 slick - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Wheels and Tires All things related to Miata Wheels and Tires.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 06-02-2012, 01:25 PM   #1
Senior Member
Thread Starter
iTrader: (6)
 
Join Date: Jun 2010
Location: San Rafael, CA
Posts: 1,124
Total Cats: 41
Default Cheap 275 slick

http://forum.miata.net/vb/showthread.php?t=462522

At $115 each it maybe worth raising the car a 1/2" and trying them out. Not going to break any records with them but could be a fun, cheap DE tire.
k24madness is offline   Reply With Quote
Old 06-03-2012, 03:28 AM   #2
Elite Member
iTrader: (5)
 
pusha's Avatar
 
Join Date: Nov 2009
Location: Miami, FL
Posts: 7,363
Total Cats: -32
Default

good link bro, I likey
pusha is offline   Reply With Quote
Old 06-03-2012, 04:57 AM   #3
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

This tire is only for extreme V8 Miatas with aero, not for unreliable turbo Miatas.

Last edited by hustler; 06-03-2012 at 05:14 AM.
hustler is offline   Reply With Quote
Old 06-03-2012, 02:34 PM   #4
Senior Member
Thread Starter
iTrader: (6)
 
Join Date: Jun 2010
Location: San Rafael, CA
Posts: 1,124
Total Cats: 41
Default

Quote:
Originally Posted by hustler View Post
This tire is only for extreme V8 Miatas with aero, not for unreliable turbo Miatas.
LOL....I spoke to the local American Racer dealer. He said the sidewalls were on the softer side of slicks. This makes me think if they work on a porky V8 car then they should be even better for the lighter FI guys.

The real challenge will be the 23.8" height. With that in mind it will never be a record breaking tire. Still a winner at $460 a set if you get 10 heat cycles at R6 level of grip.
k24madness is offline   Reply With Quote
Old 06-03-2012, 04:40 PM   #5
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,437
Total Cats: 84
Default

Other than raising the car, you might find that they rub at the rear of the front wheel wells. Pulling out castor to compensate can make it VERY twitchy.
olderguy is offline   Reply With Quote
Old 06-03-2012, 10:39 PM   #6
Senior Member
Thread Starter
iTrader: (6)
 
Join Date: Jun 2010
Location: San Rafael, CA
Posts: 1,124
Total Cats: 41
Default

Quote:
Originally Posted by olderguy View Post
Other than raising the car, you might find that they rub at the rear of the front wheel wells. Pulling out castor to compensate can make it VERY twitchy.
I wonder why Mark has not mentioned any problems there. Maybe the NB sub frame CA mounting points help that.
k24madness is offline   Reply With Quote
Old 06-03-2012, 10:56 PM   #7
Senior Member
 
Join Date: Aug 2010
Location: Maumelle, AR
Posts: 618
Total Cats: 2
Default

ooh, neat... I wanna see how the soft compound compares to the a6... though that'd be xp instead of ssm right? (Bias ply non dot)
ianferrell is offline   Reply With Quote
Old 06-08-2012, 02:18 PM   #8
Junior Member
 
Join Date: May 2012
Posts: 131
Total Cats: 2
Default

Quote:
Originally Posted by ianferrell View Post
ooh, neat... I wanna see how the soft compound compares to the a6... though that'd be xp instead of ssm right? (Bias ply non dot)
Correct, XP, not SSM. Possibly EM too.
Rocwandrer is offline   Reply With Quote
Old 06-08-2012, 03:45 PM   #9
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,353
Total Cats: 1,319
Default

Quote:
Originally Posted by k24madness View Post
I wonder why Mark has not mentioned any problems there. Maybe the NB sub frame CA mounting points help that.
He hasn't mentioned it because it's not an issue. If you're stupid enough to whine about how your 275mm tires rub ---- at full lock on a Miata, you should just sell the car and give up.

BTW, you can't just "raise the car half an inch" and run a 23.8" tire. You would have to run a thicker bumpstop or do something else to limit wheel travel. Otherwise, the tire will foul the top of the fender and the shock tower in a big way. Even with 700 or 800lb springs we get into the bumpstops on a routine basis. As-is, my 23" tall NT-01s polish the shock towers and rub the tops of the fenders.
Savington is offline   Reply With Quote
Old 06-08-2012, 04:03 PM   #10
Elite Member
 
Join Date: Jul 2007
Location: Little Rock, AR
Posts: 3,109
Total Cats: 127
Default

You can just let them rub away too. Like Savington said you would need to add some bumpstop to limit travel, due to the motion ratio it wont be much maybe? .3". Which actually might not hurt anything to much because the sidewalls are softer.
jacob300zx is offline   Reply With Quote
Old 07-21-2012, 11:06 PM   #11
Junior Member
 
Join Date: Sep 2008
Location: Houston, TX
Posts: 102
Total Cats: 0
Default

wouldn't adding some packers below the bump stop do the same thing?

I might try some of the mini sprint 22.5 height ones on my 13x9s. That will keep me close to 23" and I'll run a medium compound.
miata_racer is offline   Reply With Quote
Old 07-21-2012, 11:20 PM   #12
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

I have something that is 2.75" and slick for u bby

In for incest
Faeflora is offline   Reply With Quote
Old 07-21-2012, 11:51 PM   #13
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by Savington View Post
He hasn't mentioned it because it's not an issue. If you're stupid enough to whine about how your 275mm tires rub ---- at full lock on a Miata, you should just sell the car and give up.

BTW, you can't just "raise the car half an inch" and run a 23.8" tire. You would have to run a thicker bumpstop or do something else to limit wheel travel. Otherwise, the tire will foul the top of the fender and the shock tower in a big way. Even with 700 or 800lb springs we get into the bumpstops on a routine basis. As-is, my 23" tall NT-01s polish the shock towers and rub the tops of the fenders.
That PerryRace guy knows more than all of us combined. If you're ever at the track with him and the hood is up on your car so it can cool off, he'll let you know how much you don't know. I can't wait to spend time with him at the track again.
hustler is offline   Reply With Quote
Old 09-25-2012, 02:51 PM   #14
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

So I raced on some of these over the weekend at Texas World Speedway. They work, but have a much different feel than a 275 R6 (back-to-back comparison). They require a lot of slip angle to go fast, and I mean a LOT. The car feel is much looser, not as in oversteer loose, but as in more of a floaty feel. Steering inputs and the movement of the car are exaggerated a lot.

They are also big. No way IMO would they fit with just a rolled fender, especially on a NA (I have Autokonexion flares). They are a little narrower than a 275 R6, but are a lot taller, so that is where the clearance issue comes in. For example, I had to bend in the bottom edge of the front quarter panel (behind the tire) on both sides to keep them from rubbing.

I was having to deal with some suspension setup issues that were causing drastic mid-corner and corner exit oversteer. I finally fixed that, but by then the AR rear tires were done, so I switched to R6 scrubs to finish out the weekend. Because I did not try the AR tires after I finally got the car balanced, I cannot say with 100% confidence that they are as fast as Hoosiers, but they are pretty close, say within 2 seconds. They are fast tires, just be prepared for the difference in handling. It is not bad, just different. Also be aware that they require a lot less camber than Hoosiers so to get optimum performance, negative camber has to be reduced by a lot, on the order of 1-2 degrees. So it is not a bolt-on tire.
ZX-Tex is offline   Reply With Quote
Old 09-25-2012, 05:55 PM   #15
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,353
Total Cats: 1,319
Default

"within 2 seconds" is not close. That's like saying NT-01s are "close" to Hoosier A6s in the same size.
Savington is offline   Reply With Quote
Old 09-25-2012, 06:28 PM   #16
Elite Member
iTrader: (4)
 
Join Date: Sep 2006
Location: Charlotte, NC
Posts: 3,048
Total Cats: 4
Default

Quote:
Originally Posted by Savington View Post
"within 2 seconds" is not close. That's like saying NT-01s are "close" to Hoosier A6s in the same size.
That's kind of what I was thinking...

Then again, are they close considering the price difference?
Efini~FC3S is offline   Reply With Quote
Old 09-25-2012, 06:47 PM   #17
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

Honestly if there was a NT-01, or something like it (grip, longevity, price) in a 245, I would rather use that, at least for track days. But we are all still waiting for that one to appear.

Another variable in this comparison is that I did not add camber back to the car when I switched to the R6s. The resulting tire temperature profiles (inner, center, outer, measured with a probe pyrometer) were sort-of OK, but more camber would have brought more speed. So between that and the big suspension tweak it is hard for me to say exactly how close they are.
ZX-Tex is offline   Reply With Quote
Old 12-30-2012, 10:46 AM   #18
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

So I posted this over at m.n and am reposting it here FYI

I just used them again at NOLA near New Orleans, which is a fairly fast, fairly technical track. Everything from above still applies. They work, but as mentioned they need lots of slip angle and the car is very floaty; you have to aim well inside the corner (like a few feet) to hit the apex. They also wear quickly. If I started with a fresh set for the weekend, and ran them in every session, they would be close to done by the end of the weekend (two days, four sessions each day, ~20 minutes per session).

For whatever reason they also take a LONG time to heat up. The first few laps the car wants to understeer and just feels wrong. About 5-7 laps in they come to life. In all of my sessions for that weekend, my fastest lap in TT was set on my last lap, every time which was lap 8 or 10 depending on the session.

All that being said, I did turn in some pretty fast laps, about 7 seconds faster than the fastest Spec Miata lap (same day, same conditions). I had to drive the car very aggressively. Still smooth, but making course changes like I really meant it. Steering effort and wheel angle is substantially higher than everything else I have tried.

I do not think I will be using these again, and will be switching to the purple crack for next season. Dollar per track mile I do not think they save much money over Hoosiers since they wear so quickly. Just my opinion, YMMV. They are worth trying if you go in with the right expectations.
ZX-Tex is offline   Reply With Quote
Old 12-31-2012, 03:14 PM   #19
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,308
Total Cats: 1,326
Default

FWIW, Formula Atlantic front scrubs are affordable and they work on Miatas. 9's or 10's best.
emilio700 is offline   Reply With Quote
Old 12-31-2012, 04:52 PM   #20
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

Yep, thanks, tried those too, scrubs from John Berget. I got tired of trying to make them work for me after a couple of sets and gave up on them. I do not know if it is my car setup or my driving style but I could not go significantly faster on FAs than NT-01s.

I know someone else with a V8 Miata (fast) that could not get FAs to work for them either.
ZX-Tex is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
15x10 - 15x11 6UL @ 949 Racing emilio700 Wheels and Tires 151 06-02-2017 03:36 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:49 AM.