Hands down - Yokohama.

I have had the AD07 then the Sumi's. and now the AD08. Yokohama's are in an entirely different league - in every aspect. I ditched the Sumi's after 4,000 miles and wrote it off as a $650 mistake.

http://www.leftlanenews.com/review-y...eova-ad08.html

 

To answer the other part of the question, IIRC... The Z-rating (149mph+) is a bit older, and was more just to differentiate from a V-rating. The ratings in-between (W,Y) show more accuracy in the actual rated top-speed, usually also showing under a Z-rating anyway.

I looked it up to be sure. Check out this link:
http://www.tirerack.com/tires/tirete....jsp?techid=35

 

fdorn
Do you track your car with Yokohama's ,if you do how do you compare Yokoama vs. Michellin pilot sport cup at the track

Rolando

 

yeah they are good but back tires on those lasted me 5k miles beware if you drive with spirit

 

I do track with the Yokohama's and for a street tire, they are hard to beat. This will probably be the last year I use them before moving to MPS Cup or the Yokohama A048 track tires, but I will continue to use them on the street and for bad weather track days.

Hard to compare a street tire (AD08) with a competetion tire (MPS Cup). For track only - MPS Cup. For street only Yokohama's. For street and a couple of DE's a year Yokohama's. Anything more than a dew DE's and I would probably be considering a dedicated track tire.

 

Thank you fdorm,i'll try those Yokohama