Tires (Summer/Winter/All-Season)
- Thread starter Puppethead
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Puppethead
Well-Known Member
In my case it was a rear bearing, if I remember correctly passenger (right) side.
These sound like a great choice @ColdCase. I wish they made them in the 195/55-16 size. The grass is always greener...
ColdCase
Active Member
Dealer says not a wheel bearing, more tire singing +road surface related. The tech swapped tires and the noise characteristics change (the OEM Ventus were noisier but did not sing). The left/right turn noise variation seems to have been caused by out of spec passenger side camber-toe, and steer ahead.
It turns out these Pirelli tires can sing like a wheel bearing just starting to go bad at certain speeds on some road surfaces and under some conditions. Playing the radio at low volume hides the sing. I noticed the loaner Clubman EV had similarly singing tires. Something you would probably never notice in an ICE.
It turns out these Pirelli tires can sing like a wheel bearing just starting to go bad at certain speeds on some road surfaces and under some conditions. Playing the radio at low volume hides the sing. I noticed the loaner Clubman EV had similarly singing tires. Something you would probably never notice in an ICE.
Puppethead
Well-Known Member
Runflat or non-runflat, because I've been driving every summer on non-runflat F1s and I think they're quiet, but found the runflat ones are noisy as you describe.
ColdCase
Active Member
I've put about 300 miles on the Pirelli Cinturato P7 All Season Electric. There is also a run flat non electric rated version.
The Electric on the mini has a sing most notable at 40-50 mph on smoother road surfaces, like fresh asphalt. They also have some slow speed roughness. Above 60 they are pretty much silent. The OEM Hankooks never sang to me but were noisier overall at speed.
According to the Pirelli web site, the electric version has lower rolling resistance than the run flats. The tire has a harder tread compound and flatter tread profile. They seem to handle curves at 9 tenths without complaint and brakes well, but seem easier to spin on acceleration than the Hankooks. Too early on impact to range.
The run flats have a newer tread design for better noise abatement including foam noise absorbing layers. So they should be quieter.
At this time there is about a $35 difference in price, which seems to vary from week to week.
The Electric on the mini has a sing most notable at 40-50 mph on smoother road surfaces, like fresh asphalt. They also have some slow speed roughness. Above 60 they are pretty much silent. The OEM Hankooks never sang to me but were noisier overall at speed.
According to the Pirelli web site, the electric version has lower rolling resistance than the run flats. The tire has a harder tread compound and flatter tread profile. They seem to handle curves at 9 tenths without complaint and brakes well, but seem easier to spin on acceleration than the Hankooks. Too early on impact to range.
The run flats have a newer tread design for better noise abatement including foam noise absorbing layers. So they should be quieter.
At this time there is about a $35 difference in price, which seems to vary from week to week.
teslarati97
Well-Known Member
I run Cinturato P7 summer non-RFT and with air conditioning for 85F sunny weather, and I'm still averaging 5.5mi/kWh.
Rexsio
Well-Known Member
What is your milages with 5.5 kWh as I’m doing with 4.6 kWh on Sport mode driving around 2 -5 miles every day small distance making 120 miles all the time you must get 150 miles as my driving is city driving only as 20-30 miles an HR and I’m on high regen all the time without Sport mode I don’t want to own a SE as in summer I’m on Hankooks
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teslarati97
Well-Known Member
I do a mix of highway and city driving, but the winter is closer to 2.0mi/kWh on the F56 so I guess the GoM doesn't really change. On really cold days like -20F and colder, the U25 Countryman has the same range as the F56!
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Puppethead
Well-Known Member
You should try the experiment I did with the F56 SE at -10 ºF (or so) and drove without heat, got at least 4 mi/kWh. So heating the cabin takes a lot of energy, and the SE batteries hold up well in extreme cold. The U25 is much bigger so it should take more to heat, but maybe it doesn't cool down as quickly? And no idea what type of batteries it uses.
teslarati97
Well-Known Member
The U25 is under the Gen5 system, so I'd like to say prismatic NMC 811 and no permanent magnets for the motors.
Realistically you can plug in with an EVSE and set a departure time (for cabin + battery), but I really wanted to know what it would do with outdoor cold soaking (and not sheltered in the garage).
Realistically you can plug in with an EVSE and set a departure time (for cabin + battery), but I really wanted to know what it would do with outdoor cold soaking (and not sheltered in the garage).
Puppethead
Well-Known Member
My SE gets cold-soaked every frigid working day during the winter as it sits in my office parking lot. I've had the e-power meter drop down to about 40%, but it never seems to cause noticeable driving issues other than top speed. Cold-soaking definitely affects charging, though.
teslarati97
Well-Known Member
I don't remember seeing the e-power go down below 30%, maybe it did the one time it was colder than -40F and my GoM was 43mi at 100% SoC. All I remember was there was no power steering and the seats were rock hard. Anyways back to the tires, summer tires can certainly give a range boost, and the sames goes for lighter wheel choices as well. For places with really cold winters, you just need to be more thoughtful.
ICE vehicles can burn anywhere from 0.5 to 1 gallon of gasoline after 1 hour of idling (~33.6kWh equivalent per gallon), but it's easy to refuel a 2021 MINI Cooper S with a 436.8kWh (13 gal) premium petrol tank at 100% efficiency.
ICE vehicles can burn anywhere from 0.5 to 1 gallon of gasoline after 1 hour of idling (~33.6kWh equivalent per gallon), but it's easy to refuel a 2021 MINI Cooper S with a 436.8kWh (13 gal) premium petrol tank at 100% efficiency.
Rexsio
Well-Known Member
How you don’t have power steering as is electric no fluid no hydraulic assistance and sits usually are heated as I don’t use cabin heating just sits and steering wheel and wearing winter clothes as is beautiful thing to own EV freezing ours buts in wrong climates with minus 40 F. As NY . Is as Florida during winters In mild winter
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Rexsio
Well-Known Member
As I’m old dud don’t tray to be so smart my SE winter summer on sport mode for 3 1/2 year is showing me 4.6 mi/kWh doesn’t matter how I drive or a car is stock on that behavior as I do always about 120 miles slow driving 2-5 miles a day for week or highway driving up to 140 miles on Sport mode pushing car to 90 m/h here and there which I understand that is a limit how SE should give to me as a lowest range of all EVs as I’m happy about as I beat a crub on any high performance cars on highway to be very spirited driver with 2 millions miles on my odometer in NY. 30 years every day by a car to work and in EU 8 years as taxi an all a driving for fan on weekends.
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DisgruntledSanta
Active Member
Put some new shoes on Vanessa, Continental ExtremeContact DWS06, 205/50R16. Given the compound and width, I was expecting really bad range. When we first put them on, we were getting 3.0mi/kwh @70mph. Now that they are worn in a bit more (10kmi) I am getting 4.7mi/kWh @70mph! Much better.
Temps may have been at play with the initial figure, it was 40-50F when we first got them and 70F in the more recent test; YMMV.
Sent from my iPhone using Inside EVs
Temps may have been at play with the initial figure, it was 40-50F when we first got them and 70F in the more recent test; YMMV.
Sent from my iPhone using Inside EVs
@DisgruntledSanta, did you have any issues with clearance using the 205 width tires? Are you using spacers?
Would also like to know the same. I experimented with 205/50/17 on stock ET54 rims - had to add 12mm spacers (hub centric) as the tire was completely in contact with the front struts ( the strut is skinnier just below that, but the 205/50 is taller and goes beyond the slimmer part of the strut thus it needs spacer). Now my winter setup (Nokian R5, 195/55/16 with 37lbs per wheel) gets better mileage than the summer (43 pounds per wheel including the spacer). Roads around me require taller tires, so I snagged a great deal on the Revolite #517 (the ultra light rims), 16x6.5. Debating between 205/50 vs 195/55 for summer tires.