Absolute Dearth of All-Season Tires for CT5-V Blackwing

[pmsteinm]

I had the Goodyear F1 All Season on my V1 back in 2007 or so. They were good until they wore down then got really noisy. I would imagine they have improved a lot since then seeing as the competing Pilot was the A/S back then and is now up to A/S4.

 

[conipc]

The Bridgestone Potenza Sport AS has Arrived!! MIne are set for install 11/26..Get em while you can

 

[green02crew]

Those F1s also seem to be coming in 285/35r19 and 315/30r19 if a little extra width is desired.

 

[conipc]

Those F1s also seem to be coming in 285/35r19 and 315/30r19 if a little extra width is desired.

Well, dealer called and said the rear Bridgestones are on backorder with no date for shipping, so false alarm...Bummer..

 

[Clubracer6]

Well, dealer called and said the rear Bridgestones are on backorder with no date for shipping, so false alarm...Bummer..

Just had the same thing happen to me.

 

[CB34]

You have to buy these tires in September/early October at the latest or they all disappear with everyone else rushing to get them before it gets cold in the northeast.

 

[Clubracer6]

Going with the Michelin Pilot sport a/s 275f 285r

 

[CB34]

Going with the Michelin Pilot sport a/s 275f 285r

Double check that the 285s will fit on those 11” wide rear wheels. They barely stretch out in some cases and can also knock your Speedo off by 3-4 mph depending on OD which result in the car showing more mileage on the odometer then the car actually has on it.

 

[T.O.Blackwing]

Double check that the 285s will fit on those 11” wide rear wheels. They barely stretch out in some cases and can also knock your Speedo off by 3-4 mph depending on OD which result in the car showing more mileage on the odometer then the car actually has on it.

These fit on mine.

 

[CB34]

These fit on mine.View attachment 32676

I'm running 285/30R19 on the rear as well. There is a little more lip on the wheel then I like to see but it works...and of course the speedometer inaccuracy drives me NUTS.

 

[Clubracer6]

I'm running 285/30R19 on the rear as well. There is a little more lip on the wheel then I like to see but it works...and of course the speedometer inaccuracy drives me NUTS.

How much is it off by?

 

[CB34]

How much is it off by?

Depends on the speed, but according to the Waze Speedometer I see in Carplay compared to the CT5's speedo:

Under 55 - 1-2mph
55-70 - 2-3mph
70-80+ - 3-4mph

When you run the calculations using these online calculators, the difference should be 1mph, 2mph max with rounding. However, I'm assuming the way OE's have the cars calculate speed based on the speed sensors does not assume 100% tire tread life and thus the reason why the gap is even more than what is calculated.

Example one here - Tire Size Comparison

Ideally, 295/30-19R's would be much closer but I can't find them anywhere. It looks like Pirelli sold them as Sottozero's that GM used to send their press cars out with in previous years but they seem to be discontinued and no longer manufactured as of 2025.

 

[DBordello]

For dedicated setups, are most people running a square setup with 275/35R19 tires on 19x9 wheels with an offset? That is what tire rack is recommending.