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Old 05-22-2009, 03:40 PM   #1
Harry
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Question Yokohama AX tire?

So, AX gurus, I have another stupid question about AX tires:

Background: Thanks to AI, I won two free Yokohama tires of my choice. I run a 2006 WRX wagon in DS, in the WDCR SCCA and AI clubs (Washington DC area, really hot summers ). 3rd year AX'ing but not really competitive. Ran last year on old RA-1 (235/40/17); this year, I started on used A6s but they are pretty worn out and useless in the rain. Rims are 7 x 17, 50 offset (thanks, Eduardo!) Only mods are 29mm FSB, still on stock struts. Max neg front camber (-1.1), with 1/16 toe out up front.

Talked to a Yokohama US guy who said that the new AD08 may be a better choice (aka faster) than their only DoT R-comp (A048), which he said was older technology. [I understand that their new R-comp, the A050, is not available in the US now and may not ever be. Certainly, didn't make the 2009 AX tire cutoff.]

Question: Should I get the AD08, which would be a great street tire, good AX tire in the rain and wear way slower than Hoosiers A6 or should I get the A048, which are older technology and slower than A6's, anyway?

I'm thinking about the AD08 in 245/40/17 for gearing, which should just clear my rear struts (darn narrow wagon!)

Thanks,
Harry
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Old 05-22-2009, 03:44 PM   #2
BrianGT
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Yes... get the AD08 for autocrossing. I wouldn't run wider than 235/40-17 on your narrow wheels. I run 255/40-17 AD08s on my 17x9 wheels, and they are not wide enough

pics: http://www.briangt.com/gallery/bmw-tires

These tires are awesome, and IMO are a good bit better than the Dunlop StarSpec tires. The A048 might be a better track tire, but for autoX, the AD08 heats up quicker, and would be legal for running in Street Touring classes if you ever decide to move out of DS.
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Old 05-22-2009, 03:54 PM   #3
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The AD08s are a great ST* tire, but won't be as competitive as R-comps in DS. They would make great summer tires or rain tires. But (I would imagine) a similarly prepared DS wrx on A048s would have a leg up on you.

You may also want to just buy regular old tires for the wrx or another car.

Or you can come over to STU and be outgunned like me.
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Old 05-22-2009, 04:02 PM   #4
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Harry you could get two AD08's in a popular size (e.g. 255/40/17 for the 2wd STX guys) and sell them. Then use the money towards a fresh set of Victoracers, RA-1's, or something more competitive like the V710, A6, etc.
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Old 05-22-2009, 07:08 PM   #5
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Quote:
Originally Posted by Chiketkd View Post
Harry you could get two AD08's in a popular size (e.g. 255/40/17 for the 2wd STX guys) and sell them.
Or a set of A048's in one of those Corvette sizes for maximum profit
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Old 05-22-2009, 08:14 PM   #6
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Unhappy great

Quote:
Originally Posted by Chiketkd View Post
Harry you could get two AD08's in a popular size (e.g. 255/40/17 for the 2wd STX guys) and sell them. Then use the money towards a fresh set of Victoracers, RA-1's, or something more competitive like the V710, A6, etc.
Just when I thought I had it narrowed down to two choices, the guru comes up with a third (better) choice. Not crazy about getting tires, betting on the come that I can sell them to some Honda guy, tho.

- Harry
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Old 05-23-2009, 09:57 AM   #7
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yeah, pick up a pair of 285/30-18 and sell them to the RWD STU guys

(BMW E46 M3 guys)
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Old 07-10-2009, 09:42 AM   #8
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Thumbs up went with AD08's

Decided to wimp out and just get the AD08s. Picked them up this week from RT (Thanks, Sam & Paul!). And thanks again to AI for the two free tires. Consistency (slow) cup for the win!

A BIG thanks to NASIOCer who recommended only 235/40/17 vice the 245s I was thinking about. NO WAY the 245s would fit. There's about 1/4" clearance on the rear struts, on my 17 x7 E50 rims with the 235/40/17s. The stack of all four 235s measured 36 3/16, so section width is 9.05 for a 235 on a 7" rim.

Did a quick test drive last night to scrub off the mold release and to get a feel for them. The sidewalls seem a little more flexible than the used 225 A6's I used to run but them seem to stick pretty well. I'll try them out this weekend at the WDCR AX at FedEx

Any thoughts on starting AX pressures? I was thinking maybe 40F/35R and then check the chalk?

- Harry
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Old 07-10-2009, 10:11 AM   #9
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We were running something like 37/34 at the Pro, and they seemed pretty happy. But we have camber, so 40/35 sounds reasonable.
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Old 07-10-2009, 01:29 PM   #10
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Quote:
Originally Posted by ButtDyno View Post
so 40/35 sounds reasonable.
+1 Those definitely sound like good starting pressures. I'd personally run the rear pressures higher for rotation.
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Old 07-10-2009, 01:32 PM   #11
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Quote:
Originally Posted by Chiketkd View Post
+1 Those definitely sound like good starting pressures. I'd personally run the rear pressures higher for rotation.
Chike:

Do you mean higher than the front (i.e., above 40) of just higher than 35#?

- Harry
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Old 07-10-2009, 01:37 PM   #12
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Harry,

I'd personally run them higher than the fronts, at least 45psi. However, we have different driving styles. My advice, try the 40F/35R for this event and start to 'feel out' these new tires. If you find the car pushing in the slower stuff, maybe try even pressures (F&R) at the next event and go from there.
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Old 07-10-2009, 05:43 PM   #13
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Talking pix

Some more spam:

Stack of fun (and $$):




It's hardly Mini-Stompy but probably can't go any wider on the wagon:

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Old 02-24-2011, 08:16 PM   #14
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bumping this up.

I'm trying to decide if its worth getting the A048's as a dedicated autox tire and run something less extreme for the street, e.i. FK452's, Ecsta's, etc. Right now the plan is to get the AD08's and pull double duty on them, but I don't know what is more cost effective - cheaper in the long run. Both sizes will be in 295/30/18.
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Old 03-01-2011, 07:42 PM   #15
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Quote:
Originally Posted by ButtDyno View Post
We were running something like 37/34 at the Pro, and they seemed pretty happy. But we have camber, so 40/35 sounds reasonable.
Noted....since I'll be on your old tires this season
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