BMW M140i Tyres
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The following tyres have been reviewed on the BMW M140i
BMW M140i Tyre Review Highlights
This is a very brief first impression of the tyres from literally having them fitted this morning and going out for a 30min drive to reset the tyre pressure sensors. The conditions are wet and 7.5 degrees, both factors that would have made the Michelin Pilot Super Sports very compromised, as these are conditions that show up their (two main) faults. So, a perfect opportunity to see what the ASY5 do. The whole drive was gentle and sedate to scrub off the releasing compound on the surface of the tyre (wet conditions) and to get a real feel of what these do at lower speeds.
Instantly the two elements that came to my mind are how quiet these are and how much better the ride quality is. Now these are the primary reasons for changing to this pure road orientated tyre, so my expectations where pretty high given what I have read on this site. They actually exceeded those expectations by some margin. Never having done a straight back to back test like this I am blown away at how different two tyres brands/models can make your car feel. Admittedly we are not comparing like for like here as the PSS is one notch up in performance/track day credentials, but as a road tyre where this car will spend 100% of it's time, the Goodyears on this short drive are head and shoulders above the Michelins.
I have no idea about dry grip and the wear rate yet, but just on the first 10 miles, I know I made the exact right choice.
Once I get more miles on them in dry conditions I'll report back on how they feel subjectively to the PSS. But so far excellent.
Excellent in the dry although I could break traction in my 140i took a few cycles on launch control to hook up without spinning the wheels. Brilliant all round tyre, I occasionally track my car and it handles surprising well with fantastic tread wear. My car seems to wear the outer edges first but that's due to the standard control arms I've read M4 control arms fix this with more camber. In the wet they are pretty good for a summer tyre I always take it steady in wet weather anyway I'd advise anyone to do the same. They are noisy on the motorway. Country roads are the same however the grip is fantastic they really stick to the road and don't skip as you bounce from undulations in the road.
Overall highly recommend.
This review has been prompted since putting the PSSs back on the car from running a set of winter tyres. Coming back to these after running a set of Continental WinterContact TS 850P (over a mild winter) has clarified my initial impressions. To properly understand the scores I have given the Michelins, I need to give some background to the car they are fitted to and its dynamic traits. The M-lite cars suffer on bumpy, broken UK roads in a similar way to their full M Division bigger brothers. Overly stiff springs, no LSD and 370ft-lbs delivered from 1500rpm taxes rear traction at the very best of times. The suspension is designed for smooth German autobahns when fully loaded. So this car (on standard suspension) is particularly sensitive to the correct tyre match and the pressure they are set to.
On a warm (15deg+) dry day, these tyres are magical. Immense grip, fast steering reactions and great stability. I love them on these days. On 'most' northern UK days i.e. cooler and damp, these tyres seem to stiffen up with the net effect of giving traction problems, having noisy tread-block movement on full lock and a fidgety unsettled ride that lowers confidence because I feel the car is skimming the surface of the road. Interestingly with full heavy rain, they seem to find more traction than just damp conditions, so maybe the tread design clears water better than the rubber compound seems to deal with lower temperatures?
In contrast, the Conti winter tyres lost all the dynamic sporty benefits of the PSS (they are winter tyres after all) but replaced them with a far better ride and greater confidence in wet/cold weather. They are winter tyres!
Back to the Michelins. Set to 34psi all-round and with the temperature hovering around 10degrees, all the negatives have come to the fore again. On the first day of fitting them back on the car, the steering precision, stability and dynamic behaviour where amplified directly after removing the softer Contis. The car felt dynamically amazing.....However since then I have adjusted back to how they behave on a daily basis.
My conclusion is this; On the right car in a warmer climate, these are fantastic. If you do track days in warmer climates - amazing. I think they work well in a narrow window provided they suit the dynamics and power delivery of the car. In the UK on an M140i, I find them disappointing on more days than I love them. So the scores I have given them actually reflect the car/tyre match and not necessarily the tyres on their own. For what I want my car to behave like, I'll probably try a set of Goodyear Asymmetric 5s next. Hopefully these will give most of the plus points of both the Michelins and the Contis combined. I also need to set aside some funds for a suspension upgrade.
Spec'd these on a brand-new M140i, have done 4k miles and have just had them removed and replaced by some Dunlop Sport Maxx RT2 tyres! instantly feel the difference in feedback, comfort and grip. I would totally avoid this tyre... really average grip in the dry and appalling, borderline dangerous lack of grip in wet conditions. Also they are a very loud at speed and crash over even small imperfections in the road surface.