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. ;-)