bensale wrote:Hi, when I got my car it came with set of 205/45/16 Bridgestone turanzas er30's. I believe that these tyres were original equipment on the nb8b's
While the aren't out and out performance tyres, I'm quite happy with them, they grip well and after about 10,000kms have plenty of life left, although the side walls are a bit feathered. I also find that they work a lot better when pumped up to around 38-40 psi.
I believe that Yokohama C- drives are quite good in this size. Although this thread makes me want Bridgestone RE001's
http://www.mx5cartalk.com/viewtopic.php ... sc&start=0
Well since you reference my thread, and since I've owned 3 sets of ER30's (yep, original equipment on the NB8B), 2 sets of CDrives and now have the RE001's, I feel qualified to comment on my experiences

I set my fastest times at wakefield on the ER30's, they are a good tyre. I managed about 25000km on each set, but that included plenty of track and skidpan days.
The CDrives felt as good when new as the turanzas, and great in the wet, but I haven't dríven at wakefield on them so I can't comment on their outright grip. They lasted a lot longer, 50-65000km, but no track or skidpan days in there. Very good turn in. Slippery when new!
The RE001's feel a lot grippier than the CDrives, but again I haven't taken them to the track so I can't comment on their outright grip. I've done about 6000km on them now and they feel fantastic. Bit less precise turn in, but once they are turned in, and settled, they certainly do grip well.