275/40R19 Michelin PSAS4

[Madsen203]

The OE size Michelins look very narrow and stretched onto the wheel. Was wondering if anyone has installed this size on their OE 19” wheels. Keeps same diameter but tread pattern is a bit wider and will cover the edge of the rim.

Looking for better grip, aesthetics, and rim protection. Need ability to handle light snow so the pilot sport 4s are out, unfortunately. Had I planned to not hand care over to wife, I’d get those tires instead and forego any trips involving snow.

 

[Tonedog77]

you will want 275/45/19 and youll be fine

 

[MattM24]

you will want 275/45/19 and youll be fine

Why 45, not 40? 40 is closer to the stock diameter. Although both are within 3%.

 

[Tonedog77]

Cause from factory on 19s Tesla uses 45 profile. On 20s they use 40 and 21s they use 35.

 

[MattM24]

Cause from factory on 19s Tesla uses 45 profile. On 20s they use 40 and 21s they use 35.

45 is an aspect ratio. 45% of width is sidewall height.

 

[Tonedog77]

45 is an aspect ratio. 45% of width is sidewall height.

Yes we know. When talking about a tire and someone asks the profile you would say 35/40/45 which ever the profile you were running like on my P I have 35 profile tires. Or like some people on there performance Ys they swap to a 40 profile fire aka a 265/40/21 ok the stock Ubers.

 

[thesmokingman]

Cause from factory on 19s Tesla uses 45 profile. On 20s they use 40 and 21s they use 35.

However the stock tires are overly stretched so technically the right width tire and same aspect ratio will net a LARGER rolling circumference. And it also doesn't really matter all too much since the drivetrain is not coupled and MYP run difference circumference tires from the staggered setup.

 

[GeezerSquid]

I'm running 285/40/19's Michelin PSAS4
on Volk TE37 rims with 34 offset. No problems and looks great.

 

[Madsen203]

Why 45, not 40? 40 is closer to the stock diameter. Although both are within 3%.

There are more sport oriented tires available in 40 series.

Also, 40 keeps the same diameter of wheel at 28”.

I don’t want the tires to look fat like drag / funny car tires. I want them to stick over the rim ever so slightly and give the correct contact patch based on the 9.5” rim.

 

[bierrkt]

I'm running 285/40/19's Michelin PSAS4
on Volk TE37 rims with 34 offset. No problems and looks great.

Hi @GeezerSquid would you happen to have any pics of this setup (side and straight on profile). Been thinking about this size on same set of wheels. O thanks I’m advance.

 

[hyp36rmax]

Hi @GeezerSquid would you happen to have any pics of this setup (side and straight on profile). Been thinking about this size on same set of wheels. O thanks I’m advance.

Same would love to see this sample size. 285 on a 9.5 is wide.

 

[MODEL+]

275/40/19 is what I'd recommend also.

You can run 275/45/19 without adverse effects. However, a client of ours mentioned it was a bit too "bubbly" for his taste, as shown below.

-Danny

 

[fiehlsport]

Yes, 275/40-19 is the way to go. No reason to keep the stock 45 profile, the diameter will be much too large.

FWIW, the stock 255/45-19 tires are basically the exact width of the wheel. The Tesla-specific T0/T1/T2 tires come "pre-stretched," if that's a thing. If you buy a set of 21" Michelins for the Uberturbines, they are actually molded to look stretched, but they're not actually stretched when mounting.

 

[ftnguyen1]

Looking at running 275/40/19 while lowered on eibach with 18mm spacers. Any idea if this will be an issue or should i be good?

 

[hyp36rmax]

Looking at running 275/40/19 while lowered on eibach with 18mm spacers. Any idea if this will be an issue or should i be good?

I'm running this setup perfectly fine on Ohlins R&T Coil overs with Pilot Sport 4S, shouldn't be that much different from the S4.

 

[ftnguyen1]

I'm running this setup perfectly fine on Ohlins R&T Coil overs with Pilot Sport 4S, shouldn't be that much different from the S4.

View attachment 975030

View attachment 975032

View attachment 975034

Looks super clean, guess ill give it a shot although i may go with DWS06+.

 

[MODEL+]

Looking at running 275/40/19 while lowered on eibach with 18mm spacers. Any idea if this will be an issue or should i be good?

There will be some poke on 18mm spacers and that tire size.


Danny

 

[vlee]

Have you all noticed any difference in range/efficiency by running 275/40-19 over the stock 255/45/19?

 

[Sweed269]

Another option is the 245 50 19. It's actually wider than the 255 45 19 and it will give a better ride.

 

[hyp36rmax]

Have you all noticed any difference in range/efficiency by running 275/40-19 over the stock 255/45/19?

That’s negligible, the main differentiator to efficiency will be tire compound. Wider won’t affect it as much. Stickier tires will have rolling resistance.