I drive 60k miles a year. since posting this ive done about 30k. Still perfection. never ribbed and I don't go easy on them.
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Model Y Performance 21" Tires - Larger, More Comfortable Fitment Details and Experience - Michelin AS4's (With Photos)
- Thread starter Raurele
- Start date
Can anyone chime in on my recent wheel purchase. I have a Long range Y and recently bought a new set of 21" Uberturbines (love it for the looks over the inductions). Then found someone to trade me their 2 rears for my 2 fronts. So now I have a square set of Rear wheels/tires. Planning to put them on the car and run down the tires as it doesn't make sense not to just use new tires. What tire size should i replace them with when the time comes? Thanks!
Ok. Made the switch. 265/40/21 on the front and 295/40/21 on the rear. Michelin pilot sport 4 all season. The quick summary.
Looks great.
Feels mildly softer.
No rubbing or fitment issues.
Slightly more curb protection.
Here it is… pretty nasty energy usage increase.
Take into account that I’ve only had them one day. I’ll follow up in a month or so but… my everyday drive to work is 74 miles (one way) and with the stock AS4s I repeatedly registered around 276 Wh/mile. Same drive this morning returned a 338 Wh/mile consumption… Ouch.
Hope this was an anomaly… probably not though.
Looks great.
Feels mildly softer.
No rubbing or fitment issues.
Slightly more curb protection.
Here it is… pretty nasty energy usage increase.
Take into account that I’ve only had them one day. I’ll follow up in a month or so but… my everyday drive to work is 74 miles (one way) and with the stock AS4s I repeatedly registered around 276 Wh/mile. Same drive this morning returned a 338 Wh/mile consumption… Ouch.
Hope this was an anomaly… probably not though.
Teedub21
Member
Would’t your speedo/odometer be off as well? This will contribute to some of that but obviously not all of it.
Boedha-Online
Member
with my car
255/35r21 on the front 2% overreporting compared to GPS speed so 100 speedo 98 gps
275/35r21 on the front 0.25 % underreporting compared to GPS speed so 100 speedo 100.25 gps
255/40r21 on the front 2% underreporting compared to GPS speed so 100 speedo 102 gps
all in km/h sorry
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Yeah, definitely… I’m right around where raurele said the speedometer offset is. 68 mph when the speedo says 65.
Thanks for posting! Keep us updated on your energy use. I’m planning to do the same upgrade to mine but I only have a 4 mile commute to work.
I’ll definitely get some pics... I thought of another possible contributor to my energy consumption issue. My commute is normally 74 miles. I’ve been registering 66 miles since making the tire switch. So, if the car is thinking it’s only going 66 when it’s actually going 74, it should make sense that the Wh/mile value would be increased. I’m not quite sure how to calculate the actual energy consumption post-tire switch but at least there is a reason for the variance in energy efficiency. If anyone has a good idea on how to calculate the true consumption I’d appreciate any help. Thanks.
Loving the idea of the bigger tires!
I recently go a nasty bubble on my Pzeros side wall and the ride is now crap.
Any one know the best place for to buy the 265 and 295 Michelin Sports AS from?
I’m currently sitting at a $1800 quote from a local shop. (Mounted and balanced)
I’m hoping I can do a little better..
I recently go a nasty bubble on my Pzeros side wall and the ride is now crap.
Any one know the best place for to buy the 265 and 295 Michelin Sports AS from?
I’m currently sitting at a $1800 quote from a local shop. (Mounted and balanced)
I’m hoping I can do a little better..
I’ll definitely get some pics... I thought of another possible contributor to my energy consumption issue. My commute is normally 74 miles. I’ve been registering 66 miles since making the tire switch. So, if the car is thinking it’s only going 66 when it’s actually going 74, it should make sense that the Wh/mile value would be increased. I’m not quite sure how to calculate the actual energy consumption post-tire switch but at least there’s a reason the variance
Not the best pics. Been getting lots of nasty weather in the NYC area.
first 1000 miles on new tires is always bad efficiency. I get what I always got after 20k miles on these.
Nick B 902
Member
About to make the switch but thinking of using 285 rear. Why are most choosing 295 rear? Front is 255 < 265 so why not Rear 275 < 285
295 gives you a little more sidewall bulge for better wheel protection.
What tires were you using before? The efficiency loss can be partially explained by these factors, as opposed to them simply being wider and heavier:
- new tires can be stickier
- since you increased overall diameter, your efficiency would be off by a similar percentage. You're actually getting better than 338 Wh/mile
- the Pilot Sport AS4s likely have more grip than your older tires
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