Model S 2021 refresh tire / wheel size

[Hayseed_MS]

Moderator note: The starting posts in this thread were moved from the "Model S Delivery Update thread", in response to some photos of the 2021 refresh on a car carrier.

Most importantly - can anyone read the tire size on the rear??

 

[scrapps]

Most importantly - can anyone read the tire size on the rear??

Looks like 285/30 on the rear. I can't make out the front.

 

[Drew-MS]

Looks like 285/30 on the rear. I can't make out the front.

The fronts: 265-35-21 and 255-45-19. I hope the rear is at least 35 for the 21s and not 30

 

[Hayseed_MS]

The fronts: 265-35-21 and 255-45-19. I hope the rear is at least 35 for the 21s and not 30

Doesn't matter what the ratio number is - it must be the same actual sidewall height as the front to have the same overall diameter.

 

[Drew-MS]

Doesn't matter what the ratio number is - it must be the same actual sidewall height as the front to have the same overall diameter.

So then the rear is not 285-30.. the front is clearly a 265-35

 

[Hayseed_MS]

So then the rear is not 285-30.. the front is clearly a 265-35

The front has an OAD of FR 28.3 and RR 27.8 per Michelins specs for the 265 and 285 respectively. Not sure if they would accept 0.5" smaller rear to start. The rim size and such will make the mounted OAD larger or smaller so it is conceivable that the 285 is correct.

 

[Drew-MS]

The front has an OAD of FR 28.3 and RR 27.8 per Michelins specs for the 265 and 285 respectively. Not sure if they would accept 0.5" smaller rear to start. The rim size and such will make the mounted OAD larger or smaller so it is conceivable that the 285 is correct.

Thanks, well this makes it easier to choose wheels. If the 21” rear is 285-30, I’m definitely go with the 19s with a 285-40 (as per the kilowatts.)

 

[Hayseed_MS]

Thanks, well this makes it easier to choose wheels. If the 21” rear is 285-30, I’m definitely go with the 19s with a 285-40 (as per the kilowatts.)

Again, the 30 means nothing other than it is a ratio of the width. The actual sidewall in inches will be same front and rear.

 

[Drew-MS]

Again, the 30 means nothing other than it is a ratio of the width. The actual sidewall in inches will be same front and rear.

I understand but 30 tires means the pot holes will be more of a problem where I live, damaged wheels etc. I’ve had 30s once and I said never again.

 

[Drew-MS]

A 30 sidewalk tells you nothing about the sidewalk height. A 395/30 tire has a much bigger sidewall than a 195/50. The 30 is just the percent of the width, so the wider the tire, the taller a 30% sidewall becomes.

I understand but I was only comparing 285s. Specifically a 285-35-21 to a 285-30-21 and a 285-40-19 to a 285-30-21.

 

[Hayseed_MS]

Hoping these are just the same arachnids used on the previous versions which would make them 9.5 front and 10 rear wide. Previous used 265's on the rear 10" wheels so they should fit great. If that is the case, I will just switch out to 265 wide front and rear and make them square. Lots of good choices in 265/35r21 tires.

Also, would rather have the lug nut covers and center cap than the one piece they show on the website.

If they actually changed the wheels. then never mind.

 

[Str8down]

Looks like either a 285/30 or 295/30 for the rear.

 

[smith1234]

Seeing the wheel size in another forum post and cross referencing the all season tire options for the arachnids has me wondering what the best all season tire option is here. No one has makes a 265/35/21 295/30/21 AS set. The closest staggered setup I could find was Michelin Pilot sport AS4 mix of 255/40/21 and 275/35/21. Slightly larger front diameter to rear to like OEM, similar enough diameters front to rear (I think) and reasonably close to oem widths. The marginally higher sidewall heights shouldn’t matter.

Are there better AS options I am missing as max performace summers are not great options in Colorado but hate the 19 inch wheel looks?

 

[smith1234]

I just contacted Michelin on their chat and they confirmed a pilot sport AS4 in 295/30 21 will be released in July. They already offer the 265/35 21. We will have an AS option for the arachnids that are to OEM spec, just not today. Answered my own question !

 

[Hayseed_MS]

I just contacted Michelin on their chat and they confirmed a pilot sport AS4 in 295/30 21 will be released in July. They already offer the 265/35 21. We will have an AS option for the arachnids that are to OEM spec, just not today. Answered my own question !

Also the Yokohama Advan A/S + seem to have good reviews. They have a 265/35 and 275/35 (same overall diameter). Still wide and less rolling resistance. At a good price to boot.

 

[smith1234]

Also the Yokohama Advan A/S + seem to have good reviews. They have a 265/35 and 275/35 (same overall diameter). Still wide and less rolling resistance. At a good price to boot.

Good to know for an interim solution. Thx.

 

[Hayseed_MS]

Last year's model was heavier and had 265 in rear. I think this one would be fine with 265 square - help in efficiency and life. My concern would be the width of the rear wheel - I do not want to stretch the tire in width.

 

[Robotpedlr]

Someone posted this pic in another thread. 295/30/21

 

[scrapps]

Now I'd love to know the wheel size and offset so I can order a different set of rims. Not sure we'll find that out before we start seeing deliveries

 

[scrapps]

Do we think it's safe to assume the fronts are 21x9.0 and the backs are 21x11? That's what I'm going for based on this chart of recommended tire sizes. Tire equivalence: Car tire tips - Pneus Online
All the previous S wheels were+40 offset, so curious if that's the case with the new ones.