Nankang cr1

[ichy]

Has anyone ran these tires on our cars? Considering trying them but not sure how the longevity and performance is on our heavy cars.

[Kelse92]

I have been using a set on my new car. Granted, it's a much lighter car than my M3 was but the wear rate is similar to an A052 (not going to be great, but should be fine). Driving characteristics are fine, the tire can take heat decently well (although they prefer to be cool of course), and the price is in line with the A052 too. If what you are looking for is out of stock I think the Nankang is a decent alternative to the Yokohama.

[DRLane]

Originally Posted by Kelse92

I have been using a set on my new car. Granted, it's a much lighter car than my M3 was but the wear rate is similar to an A052 (not going to be great, but should be fine). Driving characteristics are fine, the tire can take heat decently well (although they prefer to be cool of course), and the price is in line with the A052 too. If what you are looking for is out of stock I think the Nankang is a decent alternative to the Yokohama.

Kelse92 How's the side wall stiffness compared to the Yoko?

[Kelse92]

Originally Posted by DRLane

Kelse92 How's the side wall stiffness compared to the Yoko?

Stiffer. The Yoko sidewall unmounted has a lot more flex than the Nankang when you put them side by side. I think it's improved the turn-in feel a decent bit compared to the Yoko's but I haven't yet mounted up my Yoko's for the new car and have changed so many things with the car beyond tires setup wise it's going to be hard to say until I can really back-to-back test them both.
I will say my initial impression is that the Yoko can multitask a bit better with braking/turning combo than the Nankang does but otherwise the two tires are pretty similar. Nankang is a touch slower but probably in line with the Falken.

[omgzirra_exe]

Originally Posted by Kelse92

I have been using a set on my new car. Granted, it's a much lighter car than my M3 was but the wear rate is similar to an A052 (not going to be great, but should be fine). Driving characteristics are fine, the tire can take heat decently well (although they prefer to be cool of course), and the price is in line with the A052 too. If what you are looking for is out of stock I think the Nankang is a decent alternative to the Yokohama.

same company anyways

[dparm]

Originally Posted by ichy

Has anyone ran these tires on our cars? Considering trying them but not sure how the longevity and performance is on our heavy cars.

Jackie Ding just broke the COTA TT1 track record on a 275mm set of them this past weekend...past record was held by a Corvette on sticker Hoosiers. His Supra is listed at 3300 pounds minimum weight and makes 622whp.

So yeah, I think they'll do okay on the M3. :-)

[tsk94]

Originally Posted by dparm

Jackie Ding just broke the COTA TT1 track record on a 275mm set of them this past weekend...past record was held by a Corvette on sticker Hoosiers. His Supra is listed at 3300 pounds minimum weight and makes 622whp.

So yeah, I think they'll do okay on the M3. :-)

I don't think mechanical grip is why his car is fast though, lol.

Still probably a decent tire though.

[dparm]

My point was that his car isn't a whole lot lighter than an E92 and he seems to do fine on the tire.

[tsk94]

Originally Posted by dparm

My point was that his car isn't a whole lot lighter than an E92 and he seems to do fine on the tire.

That's fair. Especially if you run 295's all around. If they are anything like the AR1 they run narrow for their stated size. 295 AR1's are more in line with a typical 275.

Edit: Doesn't look like they have a 295, they do have a 285/30 though.

[DRLane]

Originally Posted by tsk94

That's fair. Especially if you run 295's all around. If they are anything like the AR1 they run narrow for their stated size. 295 AR1's are more in line with a typical 275.

Edit: Doesn't look like they have a 295, they do have a 285/30 though.

The 275 CR1 or AR1 are reportedly 10.9 and 10.6 tread width. That's not particularly narrow.

Edit: The 295 AR1 tread width is 11.4" to the RR 10.9"

The CR1 look like they have considerably more of a square shoulder than the AR1 too.

[tsk94]

Originally Posted by DRLane

The 275 CR1 or AR1 are reportedly 10.9 and 10.6 tread width. That's not particularly narrow.

Edit: The 295 AR1 tread width is 11.4" to the RR 10.9"

The CR1 look like they have considerably more of a square shoulder than the AR1 too.

I've run both, on the same wheels. The 295 RR is almost half an inch wider then the 295 AR1, overall width - and overall width is what matters for fitment.

I don't have my RR's anymore, but the tread width wasn't 0.5" less then the 295 AR1 - they were roughly the same when I measured. In my experience I've found that stated numbers aren't all that accurate tbh.

It could be the CR1 has wider tread width in the same size as the AR1 due to the more squared shoulders like you mention. Which is actually a good thing.

[DRLane]

Originally Posted by tsk94

I've run both, on the same wheels. The 295 RR is almost half an inch wider then the 295 AR1, overall width - and overall width is what matters for fitment.

I don't have my RR's anymore, but the tread width wasn't 0.5" less then the 295 AR1 - they were roughly the same when I measured. In my experience I've found that stated numbers aren't all that accurate tbh.

It could be the CR1 has wider tread width in the same size as the AR1 due to the more squared shoulders like you mention. Which is actually a good thing.

Fair regarding stated numbers… but the tread width is what would yield faster times and Isn't that the point related to Jackie reference? Not fitment? I'm sure he can run larger than 275 square.

I've also run 295 RR and have 295 AR1s on 10.5 Titans currently on the car. I'm going to try the CR1 in lieu of A052 to keep with SCCA Max class at the next event.

[m3heaven]

CR1 run wide from what I've experienced on a set of 275 square. They seem wider than AR1s.

[tsk94]

Originally Posted by DRLane

Fair regarding stated numbers… but the tread width is what would yield faster times and Isn't that the point related to Jackie reference? Not fitment? I'm sure he can run larger than 275 square.

I've also run 295 RR and have 295 AR1s on 10.5 Titans currently on the car. I'm going to try the CR1 in lieu of A052 to keep with SCCA Max class at the next event.

Not exactly. What I was trying to allude at is his car isn't doing the lap times it is because of the CR1 being some magic tire, or that it's crazy wide for its size giving him extra grip. My point was his car is fast because he's making almost 700hp to the wheels and has serious (and well designed) aero. He's not making up the lap time to beat records due to mechanical grip from the CR1, that's what I was hinting at.

I also think he's limited to 275 due to his class rules. Don't quote me on that as I don't follow TT very closely or have a good understanding of specific class rules - I think I just heard it mentioned in one of his videos.

I am curious to try to the CR1's as well though. I'd like to get some feedback from people who have ran them and the AR1's and how they compare to each other. I honestly wouldn't be surprised if the CR1 is faster and wears faster then the AR1 despite being double the TW rating lol.

[DRLane]

Originally Posted by tsk94

Not exactly. What I was trying to allude at is his car isn't doing the lap times it is because of the CR1 being some magic tire, or that it's wide for its size giving him extra grip. My point was his car is fast because he's making almost 700hp to the wheels and has serious (and well designed) aero. He's not making up the lap time to beat records due to mechanical grip from the CR1, that's what I was hinting at.

I also think he's limited to 275 due to his class rules. Don't quote me on that as I don't follow TT very closely or have a good understanding of specific class rules - I think I just heard it mentioned in one of his videos.

I am curious to try to the CR1's as well though. I'd like to get some feedback from people who have ran them and the AR1's and how they compare to each other. I honestly wouldn't be surprised if the CR1 is faster and wears faster then the AR1 despite being double the TW rating lol.

Ah, that makes more sense. Yup serious aero and serious HP & torque. But if the tires were shit it all those improvements wouldn't overcome shit mechanical grip, no?

Yeah depending on SLB or GTA I think track mod or street mod is limited to 295s. But I thought it was also limited to Yoko specifically. But I get those two orgs confused all the time

[tsk94]

Originally Posted by DRLane

Ah, that makes more sense. Yup serious aero and serious HP & torque. But if the tires were shit it all those improvements wouldn't overcome shit mechanical grip, no?

Yeah depending on SLB or GTA I think track mod or street mod is limited to 285s. But I thought it was also limited to Yoko specifically. But I get those two orgs confused all the time

Well I don't think the CR1 are shit at all. From everything I've read and heard they seem to be on par with the A052, which is a damn fast tire for a 200tw tire. Fast for any tire honestly. They are faster then basically anything other then Hoosiers and slicks. So that says a lot about the CR1 if it's considered very comparable to the A052's.

If the tire was shit, then yes, the other improvements wouldn't make much or any difference. But I don't think that's the case at all. It's just not a 'magic tire' in my own words as in it being WAY faster then the A052.

[bbnks2]

Originally Posted by dparm

My point was that his car isn't a whole lot lighter than an E92 and he seems to do fine on the tire.

doing fine on them is one thing... replacing them after every session is another lol Some people have deep enough pockets to not care about the tire wear or longevity.

[Kelse92]

Originally Posted by bbnks2

doing fine on them is one thing... replacing them after every session is another lol Some people have deep enough pockets to not care about the tire wear or longevity.

I can tell from seeing that car at an event less than two weeks ago, it wasn't getting fresh tires every session.
The CR1 are going to wear similarly, but overall better than the A052. Don't scorch them and do a lighter pace session on a sticker set to scrub them in and they'll give some more life back.
Friend of mine just finished off a set on the C8 he's been driving and they got double the life on the CR1 than the A052 he said with that car. But it's autocross and surface abrasiveness can vary widely so take that with a grain of salt...

[Bartledoo]

Originally Posted by tsk94

Not exactly. What I was trying to allude at is his car isn't doing the lap times it is because of the CR1 being some magic tire, or that it's crazy wide for its size giving him extra grip. My point was his car is fast because he's making almost 700hp to the wheels and has serious (and well designed) aero. He's not making up the lap time to beat records due to mechanical grip from the CR1, that's what I was hinting at.

I also think he's limited to 275 due to his class rules. Don't quote me on that as I don't follow TT very closely or have a good understanding of specific class rules - I think I just heard it mentioned in one of his videos.

I am curious to try to the CR1's as well though. I'd like to get some feedback from people who have ran them and the AR1's and how they compare to each other. I honestly wouldn't be surprised if the CR1 is faster and wears faster then the AR1 despite being double the TW rating lol.

Yea I also wouldn’t be surprised if the CR1 is faster than the AR1. Thus is the time attack treadware scam…

[bbnks2]

Originally Posted by Bartledoo

Yea I also wouldn’t be surprised if the CR1 is faster than the AR1. Thus is the time attack treadware scam…

Any chance that it's the same starting compound just with more starting rubber and an actual tread pattern? Hankook did this with the 100tw TD Z221 tire and the 40tw Z214. Same compound... one just started with 4/32" treadware as a slick and one started as a treaded streetable tire with 7/32".


Since I was looking at these tires I noticed This little chart by Nakang:

To reduce Over steer
Reduce rear pressures or increase front pressures
To increase Over steer
Increase rear pressures or reduce front pressures
To reduce Under steer
Reduce front pressures or increase rear pressures
To increase Under steer
Increase front pressures or reduce rear pressures


This seems to be compeltely opposite tire racks recommendations:

Guide To High Performance Handling
Adjustments Decrease Understeer Decrease Oversteer
Front Tire Pressure Higher Lower
Rear Tire Pressure Lower Higher

Why are tires and suspension such a contentious topic?

[tsk94]

Originally Posted by bbnks2

Any chance that it's the same starting compound just with more starting rubber and an actual tread pattern? Hankook did this with the 100tw TD Z221 tire and the 40tw Z214. Same compound... one just started with 4/32" treadware as a slick and one started as a treaded streetable tire with 7/32".


Since I was looking at these tires I noticed This little chart by Nakang:

To reduce Over steer
Reduce rear pressures or increase front pressures
To increase Over steer
Increase rear pressures or reduce front pressures
To reduce Under steer
Reduce front pressures or increase rear pressures
To increase Under steer
Increase front pressures or reduce rear pressures


This seems to be compeltely opposite tire racks recommendations:

Guide To High Performance Handling
Adjustments Decrease Understeer Decrease Oversteer
Front Tire Pressure Higher Lower
Rear Tire Pressure Lower Higher

Why are tires and suspension such a contentious topic?

That's a possibility.

Idk if the CR1 is the same compound across the tire. If it isn't, I wouldn't be surprised if it shares at least a section of the same compound as the AR1.

From my experience, the recommendations on Nankangs site seem accurate. The only time I can think of where increasing the tire pressure on a given axle gives more grip, if it those tires were severely under pressured to begin with. Otherwise, in normal circumstances you almost lose grip when you increase tire pressure. Then it also becomes a compromise of wear, as the pressure(s) for best grip rarely equates to what wears the tire the best :/

[dparm]

Adding pressure = smaller contact patch = less grip = more sliding

Removing pressure = larger contact patch = more grip = less sliding


Obviously this has its limits (over/underinflation) and the goal is to get handling close to neutral or maybe a hair on the side of overesteer.