Has the Vitour Tempesta P1 earned its place among 200tw benchmarks?

Regarding P1 performance in autocross. I have tested this against A052 many times. The results / tire will speak for itself soon enough.

I've sent out a lot of tires to a lot of talented guys. I'll be watching results at this weekend's shootout in Vegas and next weekend's Phoenix tour.

There was a local last weekend with Phoenix region.

P1 set fastest time on the course by a significant margin. This also was A/B test against a competing tire. Top pax was set by Dave Schotz on a competitors tire, afterwards Dave switched to P1 he got from me and went substantially faster, same day / same car / same driver. The P1 were new, weren't even scrubbed. First run was a toss, but he was 0.6 faster than his top pax time on his second run on P1.

He messaged me afterwards, needless to say he was impressed and put in an order for tires for everything he competes with. 

A disproportionate amount of tires have shipped to Arizona from vitourp1.com since then.

Schotz's comparison was 305 RE71RS on 11 's and 12's  vs 345 P1 on 12's and 12.5's.

So wider tires on wider wheels, in addition to different brands.

His is a massively excess power car, so being able to put more of it down is a big win.

In reply to Andy Hollis :

OK. Another rim width question on the Vitours. My Challenge car is going to be about Miata sized, with 300 HP. Rims are 15x10. Do I go with the 285/30/15s, or pinch the 305/30/15s a bit?

DeadSkunk (Warren) said:

In reply to Andy Hollis :

OK. Another rim width question on the Vitours. My Challenge car is going to be about Miata sized, with 300 HP. Rims are 15x10. Do I go with the 285/30/15s, or pinch the 305/30/15s a bit?

I would not expect a 305 to be any quicker than a 285 when both are on 10's.  In fact, a 285 might not be any faster than a 245 on a 10. 

But, there are height differences there which affect gearing and roll center, so factor that in.

You really want an 11 for the 285 and 12 for the 305.  Local guy has done both of those combos.

Ultimately, you won't know for sure unless you test.

So the real question, that I'm a little surprised nobody has asked...are these less of a pain to mount than the RE71RS?

dps214 said:

So the real question, that I'm a little surprised nobody has asked...are these less of a pain to mount than the RE71RS?

Yes.  Very normal.

They were also very round and took very little weight to balance.

Andy Hollis said:

dps214 said:

So the real question, that I'm a little surprised nobody has asked...are these less of a pain to mount than the RE71RS?

Yes.  Very normal.

They were also very round and took very little weight to balance.

Yeah I'm gonna be the voice of dissent here and say they went on my rims about exactly like a Bridgestone. Two went on after repeated cycles with tire machine pressure (about 55psi max) and two needed some additional persuasion (70psi+). Balancing was fairy normal, though.

One thing I am noticing is they flat spot quickly. Evn if they sit overnight the first few miles the next day have a noticeable flat spot on the tires until they heat up a bit.

JG Pasterjak said:

One thing I am noticing is they flat spot quickly. Evn if they sit overnight the first few miles the next day have a noticeable flat spot on the tires until they heat up a bit.

Yep.  On a cold day, they will do it between sessions.  Feels all rumbly bumpy for a lap or two.

In reply to DeadSkunk (Warren) :

Closest test I can tell you is that I have run the 285 and 305 on an 11 on the front of my lotus. Markedly faster with the 305.

Night and day difference from 245s from any of the other makers. 

Andy Hollis said:

flyin_viata said:

RE71RS
CRSv2
A052
P1
TAP
RT660+

SC3R
ProxesR

V730
SC3
VR2
ECF
RS4

Nice to have more tire options (and availability!) going into 2025.

So many acronyms, so little time.

It's a golden age for performance tires. 
 

And my crystal ball sees more on the horizon...

Here in europe is more like dark ages than golden age for smaller wheel sizes. Its crazy how much choice you got over there.

In reply to malibuguy :

What Vitour really needs to do is make this tire in a 345/35/15 so that it's an option for the Countach. ;-)

what pressures were used in these test?

were pressure increases measured after test?

JKeccose said:

what pressures were used in these test?

were pressure increases measured after test?

25 cold, which typically puts them around 28-30 hot.  Was not measured afterwards.

Also, it is worth mentioning that PTS Race Tire & Wheel (Phil's Tire Service) signing on last year boosted the validity of the Vitour and helped with all the behind the scenes business dealings thorough out the current process to date.........

Some questions for this test:

1) was this tested on a track? Autocross course?

2) is it asphalt or concrete? What was the temperature that day (or those days)?

3) what alignment numbers do you run on the ND?

4) what's the curb weight on the car with you in it?

5) there's a few sites selling P1s, even the old site is still up. Just confirming this is the correct one: https://vitourp1.com/

I just mounted up my P1+ set on my C7 Z06 yesterday. Initial impressions are that they aren't as darty as Sport Cup 2s with the same alignment. We'll see how they do for AutoX next month! 

Tom77 said:

Some questions for this test:

 

1) was this tested on a track? Autocross course?

2) is it asphalt or concrete? What was the temperature that day (or those days)?

3) what alignment numbers do you run on the ND?

4) what's the curb weight on the car with you in it?

5) there's a few sites selling P1s, even the old site is still up. Just confirming this is the correct one: https://vitourp1.com/

Did you read the story?  The first two answers are right there in print. 

You can read details about the Triple Threat ND here ==> https://grassrootsmotorsports.com/project-cars/2019-nd-mx-5/

But I'll save you the digging...camber is 3 front and 2.5 rear.  Curb weight is 2400 with me and no fuel.

There are two authorized retail outlets at the moment, the one you listed and Phil's Tire Service https://philstireservice.com/

Dr_Car said:

In reply to malibuguy :

What Vitour really needs to do is make this tire in a 345/35/15 so that it's an option for the Countach. ;-)

Weird way to spell CRX but I like how you think 

Has anyone run a staggered manufacturer setup on FWD, yet? I'm currently on RE front, a052 back. I like it a lot. I had CR-S on the front before the bridgestones. Lots of grip from the CR-S, but rather vague and needed to be warm. Those were pinched, though. My car tortures the fronts but not the rears. My rear yokos look like they'll outlast 3 pairs of fronts.

Are the 245/35-15s good on 9" rims? I have some on the way from Phil's Tire, but I'll need some wheels for them. I'm moving to GST, so have a max of 9" wide. I was unaware that vitourp1 wasn't just another Shady Sammy site...

My car really likes small diameter tires on the driving wheels, I hope to see the low profile ones continue to be available.

Pictsidhe said:

Has anyone run a staggered manufacturer setup on FWD, yet? I'm currently on RE front, a052 back. I like it a lot. I had CR-S on the front before the bridgestones. Lots of grip from the CR-S, but rather vague and needed to be warm. Those were pinched, though. My car tortures the fronts but not the rears. My rear yokos look like they'll outlast 3 pairs of fronts.

Are the 245/35-15s good on 9" rims?

I do that all the time on the CRX.  A052's on the rear come up to temp very quickly so the car doesn't try to kill you when the fronts come in first and the rears are still thinking about it.  And then CRS, 71RS, A052, P1...whatever on the front.  Works a treat.

In the r-comp world, I'll often put A7 on the rear and R7 on the front for the same reason.

With a 65/35 weight distribution, and FWD, you have very different missions for front and rear tires.

Would I do it for a 50/50 RWD car like a Miata?  Heck no.

245 on a 9?  9.5 or 10 will be more optimal, but you should be ok.  Both the 225 and 245 CRS we used for the P1 tests were mounted on 9's.  And turned the same lap times.

In reply to Andy Hollis :

Awesome, it looks like can stick with a052s on the rear. I really like them there. I do have some 205 P1s on the way so I can mix them up with my current 205 a052 and re71s and see what happens. GST limits me to 9" rims, so can't go larger without jumping class. My car is FWD 55/45, but the rears still have a much easier time than the fronts. I've only had the back end all over the place once with the re71/a052 combo. It was about 45F and I'd also just flipped the Yokos. They were back to normal for 2nd and later runs.

Also worth noting I ran 285/15 p1 on the front of my lotus with 315/18 a052 on the rear for the better part of a season. 

I later swapped to 345/18 p1 which was an improvement, then 305/15 p1 on the front which was also an improvement. 

Allot of these 200tw tires are now made in weird sizes like 205/45/15. Three years ago i could only find one.

In reply to Tom77 :

If you lack camber (which I do), the Yok's don't work well.....I've tried.  The king in camber limited set-ups is RE71rs.  But.....maybe that is changing.  Beeville had Vitour take 1 and 2 in DS.

In reply to dallasreed :

Dallas,

It looks like 235/45r17 are coming soon.  I'm hoping to get a set for an early May event.  Do you have specifics on when they will be in?  I need to make a decision on a set for that event soon.