Upgrading from Primacy's to PS4S is a crazy experience

[blue92lx]

First off I want to note, I don't know if the PS4S is this good or the Primacy's are that bad. My experience so far:

1. Not any louder, I'd say the same road noise.
2. Softer compound = softer ride. Going over brick roads is noticeably better on PS4S tires.
3. Wet weather is clearly better. Driving through large pooled up water on the side of the road pulls the car less than it did on the Primacy tires.
4. They just look so much better from every angle. The sidewalls are cleaner, the tread blocks are fatter without a million grooves in them, I love it.
5. Obvious massive improvement in grip, that's a no brainer.

I have a 2024 3.3t AWD so I couldn't go square, but I went up a size to 235/265 on stock wheels. It looks so much better, more so than I thought it would. From the front/side looking at the rear tires they come out just a little bit more but it's noticeable, and they aren't overly balloony on the wheels or anything like that. I'm lowered on Eibach springs and the little bit of extra height on the tires also perfectly fills the wheel well. Before there was about a finger width of space, now they're matched to the wheel well exactly.

I knew these were going to be better overall, but I expected more noise or some kind of compromise somewhere else, but I just don't see it (I also don't live in an area with low temperatures, so that's the one major issue I don't have to contend with). They're literally better in every category. I may have to replace them every two years, but that's a small price to pay in my opinion for what I'm getting.

I debated forever on these or PS4AS. I had actually put in a request for PS4AS and they mistakenly put PS4S on the quote (it's a local shop I take my car to for anything I need done on it. I gave them a call and they guy that picked up the phone assured me he's never had a problem with them as a daily tire and to give it a try over the all seasons. Glad I did.

 

[blnewto]

Primacys are a high mileage touring type tire, no comparison to a Ultra high performance summer tire, and Michelins are a top performer in that category. If you don't have weather that requires a All Season tire than yeah, it's a no brainer Enjoy your "new" G70
Just beware, if you use your G in freezing temps or light snow those summer tires can turn dangerous in a hurry.

 

[enrique_7812x]

First off I want to note, I don't know if the PS4S is this good or the Primacy's are that bad. My experience so far:

Just curious, you're on the G70 forum, but your profile shows a 2022 GV70. Which vehicle are these new tires for?

 

[blue92lx]

Oh yeah I used to own a GV70, I need to update that.

 

[JCtx]

The Primacy A/Ss are quieter, but you were comparing worn tires with new ones, so maybe that was why you think they're the same. Having said that, they're not that much noisier. A higher performing A/S tire like the A/S4 is probably better everywhere over 4Ss, except at their operating temperature, which you can only achieve on a track, or hot climate. An A/S4 is IMMENSELY better than the Primacy, which is a touring A/S tire. And you'd still have winter capability, which is exactly what I'd get if not selling the car.

 

[blue92lx]

Actually my Primacy tires only had 5k miles on them, they were basically new.

 

[steveinarizona]

Actually my Primacy tires only had 5k miles on them, they were basically new.

Good for you. My GV60 Performance came with Primacy AS tires and I really dislike the floaty feeling around turns. I have just over 20K miles on my car and sometime in the next six months I plan to replace the Primacy tires with Pilot Sport 4S. Like you, I live in a warm climate so I don't need all sesaon tires. I also fault Genesis for putting Primacy tires on a "Performance" car. In my case there is even one in my car's size that is HL rated instead of XL (it was made for Mercedes).

Please keep us informed of your experiences with the upgraded ultraperformance summer tires.

Thanks!!

 

[JCtx]

Actually my Primacy tires only had 5k miles on them, they were basically new.

I've gone the other way, and the Primacy tires are quieter. And it's a fact, and it only makes sense. One thing is that you don't hear the difference inside the vehicle, but they're noisier. And even Michelin tells you that. Having said that, Primacy tires are crap on a vehicle like ours, and I don't like them either. These cars should come with the Pilot A/S4s, which is the best compromise between the Primacy and summer tires. Most folks see winters, where summer tires can be downright dangerous, as even temps of 50F can make them lose grip all of a sudden. I learned that lesson the hard way on my M3 V8 back in 2008, so don't assume otherwise, like I did.

 

[blue92lx]

I mean, I don't care how loud a tire is outside of the car. The one thing I was really worried about was how loud they'd be inside the car and theres no difference. I can confidently say that since I was really paying attention to it over different roads in my area worried I wasn't going to like a different droning tone, or loudness in general. I don't want my G70 to turn into a dedicated sports car with the compromises that come with a dedicated sports car. So far with the tires and Eibach suspension it's basically no different while cruising around than the stock setup.

 

[scottdk]

When my wife purchased her G70 last Spring, she drove 500 miles on it when I had the A/S Michelins removed (and sold) and had the PS4S tires installed. So much better, wish they came on the AWD model from the get-go.

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[blnewto]

When my wife purchased her G70 last Spring, she drove 500 miles on it when I had the A/S Michelins removed (and sold) and had the PS4S tires installed. So much better, wish they came on the AWD model from the get-go.

Seems that they install A/S tires on the AWDs more often than not due to them being more likely to be sold & driven in colder climate areas.

 

[blue92lx]

Was back at Tail of the Dragon this week for round 2 (first one was on the stock primacy tours a year ago), man these tires are wild. You can toss the car around and feel it roll onto the tire and just grab like anything. I'm in love with the audible feedback too, you really know where the grip is just listening to the tires aside from what you feel in the wheel and seat. Bonus for how they sounded at the end of the run where they sounded like glue on pavement casually turning a slow corner.

With 235 in front and 265 in back it seems like 42psi/40psi was just about right. Since I constantly clean my car and have tire dressing applied I could see it was worn off just above the end of the tread. Possibly 39psi in the rear, but the fronts were just about right where it needed to be.

I really need to address the brakes now, the juddering was pretty bad and kept me off the brakes as much as I could be. I actually wasnt even going super hard on the brakes either which surprised me that I got the juddering action about 3 times in one run. Once they got going it didnt take much for it to come back.

 

[blnewto]

Was back at Tail of the Dragon this week for round 2 (first one was on the stock primacy tours a year ago), man these tires are wild. You can toss the car around and feel it roll onto the tire and just grab like anything. I'm in love with the audible feedback too, you really know where the grip is just listening to the tires aside from what you feel in the wheel and seat. Bonus for how they sounded at the end of the run where they sounded like glue on pavement casually turning a slow corner.

With 235 in front and 265 in back it seems like 42psi/40psi was just about right. Since I constantly clean my car and have tire dressing applied I could see it was worn off just above the end of the tread. Possibly 39psi in the rear, but the fronts were just about right where it needed to be.

I really need to address the brakes now, the juddering was pretty bad and kept me off the brakes as much as I could be. I actually wasnt even going super hard on the brakes either which surprised me that I got the juddering action about 3 times in one run. Once they got going it didnt take much for it to come back.

Nice review, what pads are you running, and are those tire sizes on your OEM wheels?

 

[blue92lx]

OEM wheels, stock pads. Not sure which pads I'm going to go with, seems like we have a lot of options now.

 

[blnewto]

OEM wheels, stock pads. Not sure which pads I'm going to go with, seems like we have a lot of options now.

I have the Dynamic friction 5000 series low metallic pads, have been great (and judder-free) for 6k miles. Just a 6 cycle bed-in w/ cleaned up rotors and they stop better than OEM but will dust a bit more, which is a great tradeoff F&R pads total $100 over on rockauto too!

 

[blue92lx]

I have the Dynamic friction 5000 series low metallic pads, have been great (and judder-free) for 6k miles. Just a 6 cycle bed-in w/ cleaned up rotors and they stop better than OEM but will dust a bit more, which is a great tradeoff F&R pads total $100 over on rockauto too!

I was considering these but which ones do you have? On their site they have DF5000 Advanced and DFC Active Performance. I don't see one labeled low metallic pads.

 

[blnewto]

I was considering these but which ones do you have? On their site they have DF5000 Advanced and DFC Active Performance. I don't see one labeled low metallic pads.

It's under the Daily Driver section and it's
DYNAMIC FRICTION 1552214500 5000 Advanced; Low Metallic (for the front) $46.89
DYNAMIC FRICTION 1552214400 5000 Advanced; Low Metallic (for the rear) $43.89
These are for the Brembo brakes, and if you want the hardware kit included those sets are just a bit further down in that column.
FWIW my springs and pins were in great shape and just a quick scrub w/ a 3m pad and they looked back to almost new condition

 

[Volfy]

With 235 in front and 265 in back it seems like 42psi/40psi was just about right. Since I constantly clean my car and have tire dressing applied I could see it was worn off just above the end of the tread. Possibly 39psi in the rear, but the fronts were just about right where it needed to be.

The better method for adjusting tire pressure is by measuring temp across your tire tread, right after running a session with heavy cornering. The Dragon is perfect for this. If the temp on the center tread is higher than the outside, then the tire is over-pressured. If it's the opposite, then it's under pressured. If just your outside shoulder of your front tires are getting hot, then the car is understeering and pushing into the corner. That is why it's not always reliable to go by shoulder wear for adjusting tire pressure.

A contact pyrometer is best, but a good one can be pricey. An IR temp gun, OTOH, can be had for cheap. Most are accurate enough for this purpose.

With your setup, you might actually need to start by running a bit lower pressure than factory placard numbers.

 

[blue92lx]

The better method for adjusting tire pressure is by measuring temp across your tire tread, right after running a session with heavy cornering. The Dragon is perfect for this. If the temp on the center tread is higher than the outside, then the tire is over-pressured. If it's the opposite, then it's under pressured. If just your outside shoulder of your front tires are getting hot, then the car is understeering and pushing into the corner. That is why it's not always reliable to go by shoulder wear for adjusting tire pressure.

A contact pyrometer is best, but a good one can be pricey. An IR temp gun, OTOH, can be had for cheap. Most are accurate enough for this purpose.

With your setup, you might actually need to start by running a bit lower pressure than factory placard numbers.

Yeah I don't have a way to measure heat right now, I figured that would be on the list if/when I try some autocross (it's so damn hot in FL where I live that I refuse to stand in 95 degree sun and heat all day).

For the door card, I normally have the tires 2 psi lower than that even on day to day driving. I figure at home the car is in our garage that's probably 15-20 degrees cooler in the morning than during the day. Up here in NC it's about the same temp difference. 60 in the morning and it was about 75 at TotD. Normal driving my pressures are 40/38, when they got hot at TotD it was 42/40.

Definitely no complaints on how they handled that's for sure, it was just good to know if I was doing the chalk the tires method it ended up right on where they should've been for the shade tree racer measurements.

 

[Hueydriver]

So, is it better to run the front a couple of pounds higher than the rear? On my 2023 2.0 I run 36 front and 38 rear! Should I switch?