Kumho PS91

ssmoked · 12-11-2016, 09:09 PM

Quote:

Originally Posted by Jhill

I just did my 2nd track day, first time with Michelin as3 and this time with s-04, Very happy with this tire. I still had track left to use on turn exit so now I'm not going fast enough for the new tires. Last time felt like a greasy bar of soap on the road. Would definitely buy s-04 again as a dual duty mostly street tire. I'll keep an eye on these kumho though as I've read kumho has put a lot of money into their r&d recently to start making some pretty competitive tires. My friend just bough some of their v720 tires that came in a very close 2nd place vs the 71r and they were dirt cheap comparatively.

I had the opposite experience. Never tracked but drive like i stole it on the streets. Had the AS3 and it hooked well from a dig all the way until hitting the wear bar. Swapped to the s-04 and instantly noticed the traction dropped (reminded me of ventus evo). The tire size of the s-o4 also measure smaller compared to other brands with same size. Looked kinda goofy and off on my stock height z

Jhill · 12-12-2016, 03:19 AM

Quote:

Originally Posted by ssmoked

I had the opposite experience. Never tracked but drive like i stole it on the streets. Had the AS3 and it hooked well from a dig all the way until hitting the wear bar. Swapped to the s-04 and instantly noticed the traction dropped (reminded me of ventus evo). The tire size of the s-o4 also measure smaller compared to other brands with same size. Looked kinda goofy and off on my stock height z

Streets don't equal track in the least (I doubt you'd ever even see a 3psi increase on street). S-04 may be slightly less width (very slightly at that) but overall surface area is going to be more with the solid contact patches. Also when you have individual blocks like the as3 they squirm against each other causing the tire to overheat and become slippery.

The s-04 vs the as3 is not even in the same league.

Halfkiddio · 12-14-2016, 02:50 PM

Quote:

Originally Posted by Jhill

I'll keep an eye on these kumho though as I've read kumho has put a lot of money into their r&d recently to start making some pretty competitive tires. My friend just bough some of their v720 tires that came in a very close 2nd place vs the 71r and they were dirt cheap comparatively.

They need to re-evaluate their budget, because the v720's are having catastrophic delamination failures on all types of cars. And this is happening on autocross courses.

Jhill · 12-15-2016, 01:15 AM

Quote:

Originally Posted by Halfkiddio

They need to re-evaluate their budget, because the v720's are having catastrophic delamination failures on all types of cars. And this is happening on autocross courses.

**** he just got his today. I'll warn him to watch out for it I guess.

shirokenkami · 11-25-2016, 10:14 AM

I'm thinking I may go with the PS91 as well. I'm usually the first to say, "Buy once, cry once" but I've found that even some of the bargain bin tires can be used for spirited driving. My own personal experience with a off brand were the Fuzion Sport UHP tires and I've used them on the Dragon(US129) as well as Devil's Triangle HOWEVER that being said this is my first high horsepower application so I may just save up for the Mich PSS. My vehicle is not a track weapon, it's a DD with occasional spirited driving and once the fuel pump and oil cooler are installed, auto-x.

barncobob · 11-25-2016, 01:00 PM

don't cheap out on tires...only thing between you and the asphalt. Im a Michelin man...gotta wear these OEM stones out first...

Hotrodz · 12-12-2016, 09:39 AM

Lol, .2 is not much of a difference considering, track and environmental conditions. Also, he is talking about tracking on a road course which is significantly different than running at a drag strip. I have not as3 and would never think of it for my application, but I have run s-04 and they perform very well for a tire in that category.

No need to get your competency challenged as your track times are as fast or faster than many with better tires than the two that are being debated.

Sent from my SM-N910P using Tapatalk

ssmoked · 12-12-2016, 01:21 PM

Quote:

Originally Posted by Hotrodz

Lol, .2 is not much of a difference considering, track and environmental conditions. Also, he is talking about tracking on a road course which is significantly different than running at a drag strip. I have not as3 and would never think of it for my application, but I have run s-04 and they perform very well for a tire in that category.

No need to get your competency challenged as your track times are as fast or faster than many with better tires than the two that are being debated.

Sent from my SM-N910P using Tapatalk

You run so4 with your TT? No wonder why people online are laughing at TT Z cant break the 13s

Hotrodz · 12-12-2016, 02:15 PM

Quote:

Originally Posted by ssmoked

You run so4 with your TT? No wonder why people online are laughing at TT Z cant break the 13s

You are hell bent on being right and can't even take compliment when it's given. I, like jhill don't drag race and yes I had s-04 on when the tt was installed, and no I don't run them now, I run re-11 for street and r888 for track days. That being said, there are more positive reviews on s-04 than as.

By the way pss don't compare to re11's on the track.

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Halfkiddio · 12-14-2016, 02:52 PM

PS91's are a decent tire for the money. A friend of mine was running them this summer on his 330ci. He was an instructor at Gridlife this year at Road Atlanta. I went for a lap with him and felt that the tires did pretty good from what I could feel in the passenger seat. He has had nothing but good things to say about them.

shirokenkami · 12-14-2016, 05:26 PM

Comparing a Max Performance Summer tire to a Ultra High Performance All Season tire is comparing apples and oranges simply because they're both round in shape. A much more fair comparison is the Bridgestone S-04 vs the Michelin Pilot Super Sport.

Jhill · 12-15-2016, 01:17 AM

Quote:

Originally Posted by shirokenkami

Comparing a Max Performance Summer tire to a Ultra High Performance All Season tire is comparing apples and oranges simply because they're both round in shape. A much more fair comparison is the Bridgestone S-04 vs the Michelin Pilot Super Sport.

That's what I was saying when he is arguing the as3 outperforms the s-04 regardless of how much info says otherwise. And yes the s-04 was night and day vs as3.

11-25-2016, 10:14 AM	#5 (permalink)
shirokenkami Base Member Join Date: Oct 2016 Location: Middle Tennessee Age: 38 Posts: 232 Drives: 2013 Z Tour Spt 6mt Rep Power: 23	I'm thinking I may go with the PS91 as well. I'm usually the first to say, "Buy once, cry once" but I've found that even some of the bargain bin tires can be used for spirited driving. My own personal experience with a off brand were the Fuzion Sport UHP tires and I've used them on the Dragon(US129) as well as Devil's Triangle HOWEVER that being said this is my first high horsepower application so I may just save up for the Mich PSS. My vehicle is not a track weapon, it's a DD with occasional spirited driving and once the fuel pump and oil cooler are installed, auto-x. __________________ “The only thing necessary for the triumph of evil is for good men to do nothing.”- Edmund Burke

12-12-2016, 09:39 AM	#7 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684386	Lol, .2 is not much of a difference considering, track and environmental conditions. Also, he is talking about tracking on a road course which is significantly different than running at a drag strip. I have not as3 and would never think of it for my application, but I have run s-04 and they perform very well for a tire in that category. No need to get your competency challenged as your track times are as fast or faster than many with better tires than the two that are being debated. Sent from my SM-N910P using Tapatalk Memphis370Z likes this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

12-14-2016, 02:52 PM	#10 (permalink)
Halfkiddio Enthusiast Member Join Date: Jan 2015 Location: Knoxville Age: 31 Posts: 250 Drives: 09 RAE 370Z Rep Power: 11	PS91's are a decent tire for the money. A friend of mine was running them this summer on his 330ci. He was an instructor at Gridlife this year at Road Atlanta. I went for a lap with him and felt that the tires did pretty good from what I could feel in the passenger seat. He has had nothing but good things to say about them. Hotrodz and shirokenkami like this. Last edited by Halfkiddio; 12-15-2016 at 08:28 AM.

12-14-2016, 05:26 PM	#11 (permalink)
shirokenkami Base Member Join Date: Oct 2016 Location: Middle Tennessee Age: 38 Posts: 232 Drives: 2013 Z Tour Spt 6mt Rep Power: 23	Comparing a Max Performance Summer tire to a Ultra High Performance All Season tire is comparing apples and oranges simply because they're both round in shape. A much more fair comparison is the Bridgestone S-04 vs the Michelin Pilot Super Sport. Hotrodz and Memphis370Z like this. __________________ “The only thing necessary for the triumph of evil is for good men to do nothing.”- Edmund Burke

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