[kthor703]

Torn on what to recommend for that use case. I want to say P4S, due to low temp nature of autocross and only doing 1 track day.

From Tire Rack feedback, seems the RE71-RS is more track vs autocross focused, but that might be them being nitpicky. I don't think you can really go wrong with either, as long as you realize limits of P4S

[m2c_6mt]

Originally Posted by kthor703

Just a note, I don't think AD-09 and RE71-RS come in 265/285 30 series sidewall sizes. Might be stuck with 255/275 35 series.

You are right...so I guess I'm really deciding between these options in that 255/275 size. I don't think I track enough to benefit from the extra width. 71-RS are backordered right now, so P4SS or AD-09.

[m2c_6mt]

Originally Posted by kthor703

Torn on what to recommend for that use case. I want to say P4S, due to low temp nature of autocross and only doing 1 track day.

From Tire Rack feedback, seems the RE71-RS is more track vs autocross focused, but that might be them being nitpicky. I don't think you can really go wrong with either, as long as you realize limits of P4S

Yup...you're spot on for those two. The AD09 is much more of a question mark, but looks really promising...

[DanG]

Originally Posted by m2c_6mt

Great thread...I'm about to buy a new set of tires, and am happy my stock MPSS made it 18k miles.

I want to buy 19 x 9.5/10.5 wheels soon, but may just buy tires first and mount them on the stock wheels till next year. I'm in California, don't really drive it in the rain, and will autocross 5-6x a year as well as do maybe 1 track day.

Tires I'm considering:
MP4S (255/275/35 or 265/285/30)
AD09 * new option! (255/275/35 or 265/285/30)
RE71RS (255/275/35 or 265/285/30)

Thoughts on what I should go with? This is a semi daily driver..I don't commute and split mileage between the car and a Honda VFR.

I'm leaning MP4S 255/275 but the AD09 looks amazing and would give me more lateral grip with the same size. Not super concerned about treadwear as long as I get 18 months/6-8k miles out of the tires.

If you don’t drive it in the rain why not get Michelin Cup2s. Best dry weather traction and great track tire. Get 255/35/19 and 275/35/19. The tires work fine on stock wheels and the 9.5/10.5 combo. I ran them on my 437s until I got my BBS CI-Rs (which are 9.5 and 10.5) with no problems. I do drive my car in the rain so I have Michelin PS4Ss.

[m2c_6mt]

Originally Posted by DanG

If you don’t drive it in the rain why not get Michelin Cup2s. Best dry weather traction and great track tire. Get 255/35/19 and 275/35/19. The tires work fine on stock wheels and the 9.5/10.5 combo. I ran them on my 437s until I got my BBS CI-Rs (which are 9.5 and 10.5) with no problems. I do drive my car in the rain so I have Michelin PS4Ss.

Did more research and it looks like the Cup2 fronts are special orders, while the PS4S star spec are out of stock till October. Just my luck...

[DanG]

Originally Posted by m2c_6mt

Did more research and it looks like the Cup2 fronts are special orders, while the PS4S star spec are out of stock till October. Just my luck...

Discount Tires has 245/265 Cup2s on hand. Here is the link: https://www.discounttire.com/buy-tir...rProduct/26318

[///MPhatic]

Originally Posted by DanG

Discount Tires has 245/265 Cup2s on hand. Here is the link: https://www.discounttire.com/buy-tir...rProduct/26318

That's the old 180 treadwear tire, which wears out very quickly because it is super sticky. That's really a track day tire only.

[m2c_6mt]

I was getting annoyed with the availability issues and went ahead & ordered the AD09s...I signed up for an autocross 9/18 so I'll report back and let you know how I like them after that event!

[jason.seki]

Originally Posted by paradocs98

I'm running 265/30 and 295/30 Michelin PS4S on 19x9.5 and 19x10.5 Apex EC-7s. Ride comfort is not appreciably different vs. stock, but the fronts do tramline and follow road imperfections more than the stock 245s. Still happy with the setup, though.

I run the same specs and share the same sentiments!

[flybigjet]

I'm running both PS4S (Street) and Cup-2 Connect's (Track) in 255/275-35-19 on an M2C. Both sets are on rims a half-inch wider than stock.

Love 'em, love 'em, love 'em.

Did I mention that I love 'em?

Some thoughts--

The PS4S are probably about the best performing street tire I've ever had-- far, FAR better than the Super Sports that came on the car. They're wearing well, look great, are quiet, have a ton of grip, handle well, and are just overall fantastic-- even in the wet. I went with -35's instead of -30's as the roads in Colorado are..... not so much of the good. Every. Single. Shop. that I talked to recommended the -35's instead of "rubber bands wrapped around a wheel" if I wanted to keep my rims intact on what we laughingly refer to as "roads". After driving on the -35's for a while, I wouldn't have gone any other way. I really like how they look and love not having to cringe every time I go over an imperfection in the road-- they just might be the perfect road tire.

The Cup-2 Connects? Great tire for HPDE's, but the softer compound and 3400 lbs. of weight are taking a toll. They're MUCH noisier and firmer than the PS4S-- I don't think I'd really like them very much if I had to live with them as a street tire-- they pick up EVERY SINGLE ROCK AND SPECK OF DIRT on the road and promptly toss it up into the undercarriage, and the stiffer sidewall definitely effects ride compliance. But- they're a full-on hoot on the track and the grip is pretty damn amazing coming out of a corner. My track is about 90 minutes away so I just swap out wheels/tires before driving there-- it's not worth trying to figure out how to get a set of tires and a lift to the track with me. The Cup-2's CAN start to get a little greasy at the tail end of a session, but that's in hard driving (upper intermediate/lower advanced) on a 95+ degree day on asphalt. I've been running them 35F/34R hot, and that seems to be pretty good to allow for good hookup of the rear.

My only complaint is the Cup-2's wear rate (which is to be expected with the compound). I've got three HPDE's and one track day on them so far, and I think I'll be lucky to get to six days total. They're not... inexpensive, so that's going to involve a lot of groveling to the Wife and swapping them out every six track days or so.

Overall, would I recommend the PS4S for Street and the Cup-2 Connect for Track in 255/275-35-19?

ABSOLUTELY. Barring going to an -18 setup and BBK, I think this is the best setup I can imagine for an M2C-- I'm very, VERY pleased with how it's all worked out. I wish they weren't quite as expensive, but in some respects, you do get what you pay for.

From what I can tell, my only two options in a "street-legal" track tire in these sizes would be the Bridgestone Potenza RE-71RS or the Yokohama Advan Neova AD09. But, since my wheel/tire/suspension combination is VERY tight, I haven't sat down to do serious research on whether the Bridgestone or Yokohama's would fit-- what I have works, so maybe not rocking the boat is a good thing.

As a data point, here's my suspension related setup if it matters-- I have no rubbing with a moderate drop (i.e. a compromise between street livability and track days with minimal to no adjustment):
- Apex Anthracite EC-7 wheelsets (F:19x9.5, ET28, 22.65 lbs. & R:19x10.5, ET45, 23.4 lbs)
- BMW M-Performance (compression & rebound adjustable) coilovers
- Millway Street camber plates (~ -2.5F, -1.9R)
- Michelin Pilot Sport 4S 255/35/19 & 275/35/19 tires for Street
- Michelin Pilot Sport Cup-2 Connect 255/35/19 & 275/35/19 tires for Track

R.