Opinions may vary but for me it would fall in to the "not a big deal" category.
Matched brands doesn't matter so much as ensuring that at any given point both tyres are in good order and up to the job you're asking them to do.
If you're looking for optional mileage then sports touring tyres are the obvious choice. The Michelin PR2 and PR3 are the most popular, closely followed by the Bridgestone BT023.
I usually get around 10K out of my BT023s, and then generally replace them due to squaring rather than lack of tread (or damned punctures of course!)
Others may be better qualified to comment on Metzeler and Dunlop.
Andy
Matched brands doesn't matter so much as ensuring that at any given point both tyres are in good order and up to the job you're asking them to do.
If you're looking for optional mileage then sports touring tyres are the obvious choice. The Michelin PR2 and PR3 are the most popular, closely followed by the Bridgestone BT023.
I usually get around 10K out of my BT023s, and then generally replace them due to squaring rather than lack of tread (or damned punctures of course!)
Others may be better qualified to comment on Metzeler and Dunlop.
Andy