szhosain wrote:Too many other variables impact the answer to these questions. It depends on the wheel size, load index, specific car and suspension, etc., etc., etc.
Z
Okay, since we are being asked for opinions, and money is "not a factor", then I would probably rank the Michelin Pilot Sport (this is not the same as the Pilot Sport A/S) as the tire to beat, for most cars and suspensions and driving conditions.
As AZHitman mentioned, the Falken Ziex 12 is another possibility, particularly because money is a factor there (the tires are relatively low-cost for the performance they offer). They are not as good as the Firestone Firehawk SZ50EP (I compared the two tires on my Q - although the Ziex 512 was for a different rim size) for wet or dry weather handling, but the SZ50EP is no longer available (Argh! ).
On my wife's Acura, I am currently using the Goodyear Eagle F1 GS-D3 and I am pleasantly surprised by how good they are. Wet weather handling is very good, almost (but not quite) up to the SZ50EP, better than the Ziex 512, but it was more expensive than either (but, money was no object, right? ). Road noise is not too bad, and stickiness is good. However, they do seem to go out of balance more quickly than I would like. On my Firestones and Falkens, I could go about 5k miles between re-balances - the Goodyears want it done closer to 3k.
My next tire for the M45 will probably be the Michelin Pilot Sport A/S. Although not as good as the Pilot Sport, the wear index is quite a bit higher (and can be compared since it is the same manufacturer), and with tires these expensive, I am willing to settle for the slightly reduced performance (both wet and dry, the A/S rating not withstanding) to get a more cost-effective outcome.
BTW, for a list of available tires and specs for the Q45 and M45 (with all kinds of rims and sizes) that have the correct load index, etc., please do a search for my posts that contains an Excel spreadsheet. If anyone wants a copy, let me know via e-mail.
Z