CT5-V 5BW new tire time - discussion

[TruckeeTaurus]

Please don't take this as me being a jerk, but Invos weren't true grippy high performance tires when they came out, what, 15+ years ago? And the 555 G2s are not particularly well respected as anything but an inexpenisve tire. The drag style 555Rs and such are supposed to be incredible in hooking up in a straight line but they have soft sidewalls (i.e. no good for handling).

I am largely content with the OE TPC-spec tires but I know the PS4S is getting long in the tooth and there are newer tires out there that might be pretty incredible, too. As I mentioned, the Potenza Sport is something I have tried in the past and was super impressed with the lateral grip, precise steering, and stiff sidewall (almost like the super 200TW style tires). But I have a feeling they wouldn't last long on a 5BW. The Yokohama AD09 is really the tire I wished they made in our sizes.

Why would I see you relating your personal experience as you being a jerk my brother? Yer good.

Maybe they’ve changed something up as almost all of the reviews I read about the Invo said they were great… though I doubt many of those folks are ripping 659 torque.

What really sucks is that there are not many all season or winter specific tires with specs for the rear tires. I’ve read the Alpin 4 is good, but can’t find them ANYWHERE. So I gotta take what I can get if I want to drive the BW in early spring or fall.

If you know of some good A/S or winter tires and where to get em, hook a brother up!

 

[Champale]

There is a big thread about that very problem somewhere on this forum if I recall.

If I needed an AS tire, I would look at the Michelin AS4 and run the factory size 275/35/19 up front and a 285/35/19 in the back. Slightly taller but slightly narrower tread in theory. However, when that 285 is mounted on the BWs 11" rear wheel, I bet it will look almost as wide as the OE 305s because, in my experience, the wheel width is about 90% of how the tire looks because the sidewall has to be attached right at the wheel lip anyway. On another car I have mounted 2 different PS4S tires that were supposed to be 1.4" different in terms of tread width but when actually mounted on the same 10.5" wheels, the naked eye could not tell any difference when I laid the wheels on the ground next to each other. They were the exact same width when mounted on the wheels.

Sorry, that's a long winded way of saying an AS4 in 285/35/19 would be my choice on the back.

 

[TruckeeTaurus]

There is a big thread about that very problem somewhere on this forum if I recall.

If I needed an AS tire, I would look at the Michelin AS4 and run the factory size 275/35/19 up front and a 285/35/19 in the back. Slightly taller but slightly narrower tread in theory. However, when that 285 is mounted on the BWs 11" rear wheel, I bet it will look almost as wide as the OE 305s because, in my experience, the wheel width is about 90% of how the tire looks because the sidewall has to be attached right at the wheel lip anyway. On another car I have mounted 2 different PS4S tires that were supposed to be 1.4" different in terms of tread width but when actually mounted on the same 10.5" wheels, the naked eye could not tell any difference when I laid the wheels on the ground next to each other. They were the exact same width when mounted on the wheels.

Sorry, that's a long winded way of saying an AS4 in 285/35/19 would be my choice on the back.

Changing up the tire specs doesn’t throw shit off on the car’s computers? I don’t want to mess with anything that could give Caddy a reason to void the warranty.

 

[Champale]

I am personally unaware of any such issues but I haven't researched it. It wouldn't be a bad idea to speak to your service advisor and see what tires they recommend for their 668hp, 205mph supersaloon. If you buy what they tell you, it would be hard for them to argue with warranty issues.

 

[Champale]

Come to think about, there are plenty of guys running non-standard tire sizes like 325s that are taller and I haven't heard of any ABS or stability control freakouts. But do your due diligence.

 

[TruckeeTaurus]

I am personally unaware of any such issues but I haven't researched it. It wouldn't be a bad idea to speak to your service advisor and see what tires they recommend for their 668hp, 205mph supersaloon. If you buy what they tell you, it would be hard for them to argue with warranty issues.

Good call. Bro, my dealership’s salesmen honestly aren’t well versed in the Blackwing. I knew more about it than them. I mean it’s not like I’ve been obsessed with the BW since 2021, checked every day for the last year to see if a car with my specific options was available, and read/watched anything I could find about the car…

 

[TruckeeTaurus]

Case in point: it was 38F driving over the Donner Summit just now. Gotta have tires that are safe at these temperatures.

 

[Champale]

I have driven on the OE tires in the 30s and wet and didn't die . . . but you do have to be a little careful.

 

[Finally-a-V]

Were those the Invos by chance? Figure I’ll only be able to run Summer tires for a few months out of the year which is why I wanted a tire that’s safe under 40F. September through April (some years through May too) I’ll need tires safe at cold temps.

Honestly, it's been so long I don't remember. They were 4 season performance tires.

 

[TruckeeTaurus]

I have driven on the OE tires in the 30s and wet and didn't die . . . but you do have to be a little careful.

I’ve heard both sides. Some have had their tires crack or blow the sidewall… others have had zero issues, so I just figured it’s better to be safe than sorry. I’ll change my wheels twice a year. Only positive thing of the car not coming with the wheel package I wanted.

 

[Brad_TX2V]

Extreme performance summer tires typically don’t fare well in freezing temperatures, they get brittle and can crack. I’ve seen it firsthand with racing slicks that came from the Chicago warehouse versus Georgia when I started out the race season in Florida in January - without even being on the car my Pirellis had MASSIVE cracks in them!! The tire guys made it right but it was an eye opener. Some tires fare well versus others but it’s something to be mindful of. I turn the heat on in the garage Mahal here in Texas to keep bad things from happening to my street tires in our winters (for the typically short Texas teen weather which we occasionally get!).

 

[TruckeeTaurus]

Damn bruh… what kind of heat are you talking about in the garage. I’ve never had to do that or even consider it because I’ve never driven on high performance tires in any of my vehicles.

I’ve got a propane heater kind like the ones used in outdoor seating for restaurants. I can’t imagine having to run that thing often though.

I figure in the winter it’ll be living in my Vallejo garage, and be brought out to play around the Bay Area. But spring summer and early fall I want to be cruising those winding mountain roads.

 

[Brad_TX2V]

Insulated garage with an AC window unit with heat. I’ll just set it to keep it 45 and above if needed. If I’m out there working I’ll keep it above 60. I’ve got a few small space heaters if needed. Not a fan of using those unless I’m in the garage though. I’ve got a remote temp gage that displays on the bedroom clock so I can monitor temps. The AC is NICE when it’s 100 plus outside! I used to think that tire cracking was a myth until I saw my own tires crack! These were going to be used at Homestead Miami on the Roval layout. That would’ve been catastrophic at 165 on the front straight! The side load on the progressive banking on NASCAR 4 is quite heavy!

Pic of window unit (top middle) with obligatory race car shot. And race tires. Since tires is what this is about! I’ve used the Pirelli wets in 32/33 degrees freezing rain at COTA with excellent results. Fortunately, no cracking. And that’s an even softer compound than a slick!! You have to run them in the wet or else they just melt/chunk off. That’s why you’ll see many racers going wet spot to wet spot on a drying race track.

 

[TruckeeTaurus]

Insulated garage with an AC window unit with heat. I’ll just set it to keep it 45 and above if needed. If I’m out there working I’ll keep it above 60. I’ve got a few small space heaters if needed. Not a fan of using those unless I’m in the garage though. I’ve got a remote temp gage that displays on the bedroom clock so I can monitor temps. The AC is NICE when it’s 100 plus outside! I used to think that tire cracking was a myth until I saw my own tires crack! These were going to be used at Homestead Miami on the Roval layout. That would’ve been catastrophic at 165 on the front straight! The side load on the progressive banking on NASCAR 4 is quite heavy!

Pic of window unit (top middle) with obligatory race car shot. And race tires. Since tires is what this is about! I’ve used the Pirelli wets in 32/33 degrees freezing rain at COTA with excellent results. Fortunately, no cracking. And that’s an even softer compound than a slick!! You have to run them in the wet or else they just melt/chunk off. That’s why you’ll see many racers going wet spot to wet spot on a drying race track.

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Wow man! Thanks for sharing. That garage looks like a bedroom with cars in it… I mean I’ve seen apartments less nice than that!

I can appreciate any advice from someone so obviously experienced. It makes me more confident in my decision to get another set of wheels and tires.

Good looking out.