Can you explain why? Can you also do a quick comparison between them? Comfort, dry/wet grip, how quickly they warm up, etc.
That's understandable, but I'm a different bike to the 675, I've no idea how much you weigh nor what your riding style is and how the suspension is set up. Don't forget that's with track days and ride outs thrown in as well. I started a tyre thread on the z1000sx forum I use. Despite us having the same bikes there's a massive range of tyre wear with identical bikes and tyres. The M5s I had were done after 3,200 miles but others were getting close to 7,000 miles out of them. One bloke was down to the canvas after 2,000 miles. I would need to put PR4s on the zx6r to see what mileage I get from those before you can compare my tyre wear to yours. What I do know is that 6,000 miles is about the most I've had from a rear tyre.
George. I reeally don't think you're goingb to go too far wrong with the M7s if that's what you're going to buy. Everyone has such a good write up to them. These will be my next tyre but trying to run the course of my pilot powers first. Which are fine in the wet, dry, cold but terrible in the greasy wet weather.
Had T30 on my street triple and they were superb and more than you'll ever need on the road. Good in wet too! Currently got m7rr on my daytona which are also superb, slightly more sporty than T30. Slightly more pointy tyre which quickens turn in. Used T30 at Ron haslam school and they were not bad on track either.
as has been said before George, they are not directly comparable, as they are different class of tyre. i use the PR4 for commuting, as they do warm up quick, and can cope with torrential rain better, imho, which i ride in, a lot . they have much more sipes/grooves in the tread, which are to aid water clearance in those conditions. they are also a different compound, and i can get 12k miles from them. in the dry, they are still more than i need, but i have not tried them on track. the M7RR's are like the Pilot Powers, have more rubber with less sipes/grooves, so would not be so efficient at clearing water. however, in the rain, they have been fine, same as the Pilot Powers i had before that. i have used both of these on road, and track, wet and dry, and both warm up quick, are outstanding in the dry, and manageable in the wet, but i do not get the same confidence from them in the wet as the PR4's. also, being this class of tyre, 6k is a good return on miles. i would possibly commute on them, same as kwacky, if i had a shorter commute, but i would be much more cautious in very wet conditions, steffydog and exiledhawke should be able to vouch for the difference in my confidence for wet/dry on the PP's when we were at Oulton Park and i feel exactly the same way about the M7RR's in the wet. I had these on the Daytona on the Fest.
Chain & Sprockets every 4 months! have you tried a scottoiler - been known to achieve 65,000 miles to one chain & sprocket set.
i agree with you completely, everyones experience is different, but, in general, i think 6k is about right for that class of tyre, for "most" people, however there will always be exceptions/riding gods/badly setup bikes that get different results i have used dunlop qualifiers, pirelli diablo corsa, michelin pilot powers, metzeler m7rr's, all same class of tyre, and once these m7rr's are done, i think they will be similar to the others, which have all returned similar 6k miles, +/- 1k i have used multiple sets of dunlop roadsmart, michelin PR3's and PR4's, and i have managed minimum 12k miles on all 3 of those tyres, with slightly more miles in winter than summer due to different riding style in the dry i think any of the "premium" brands will be similar for each class of tyre, including Bridgestone and Continental. as with car tyres there are other brands that i could expect more miles from, but i wouldnt use them on a performance vehicle...
The PR4s are the tyre of choice on the z1000sx forum and I've only heard good things about them. I see that Metzeler are bring out a new sports touring tyre next year to replace the Z8s, so I might be tempted to try those. I do about 350 miles a week commuting so like you I need something I can trust. For me the M7rrs are fantastic in the wet. But I don't think you can go wrong with any of the decent road going tyres currently available.
i have an electronic Scottoiler Stu, and by 18k, the chain definitely looks and feels ropey, or has already run out of adjustment. i have tried 60 dpm (and less) and all i get is oil up my back, so stick at 80/90 dpm. although, the current AFAM chain i had fitted last change feels much better after the last 9k, than the previous oem ones did at same point, so maybe i can trust it longer. dont want to push my luck though, as last time i did that the chain stretched at 80mph on m11, put a split in the crankcases, and caused me a big bill, which is why i have been changing at 12k
I think aftermarket stuff is better the Triumph's, but agreed you don't want to run it til it breaks.