Don't track mode in 45* weather

[skeeter]

I have a question. Do you guys think a cradle lockout will help with kicking out like this? I have an issue with this @5,500 rpm or so in second gear.

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[Cascadia_302]

She was a good sport about it. I tried to play it cool but I had to go home and change my undies.

I did this with my truck back some months ago when it almost swapped ends on me. It hadn't rained for some time and I made a turn through an oily intersection, I felt my heart jump and it was like "oh crap if a cop saw that" but I can only imagine at the speed you were going and so much less time to react, good job.

 

[valentinoamoro]

It seems that many, many performance cars come with Pirelli from the factory. Names like Mclaren for example. But based on Wikipedia, they've had a rough time in Formula 1:

li is the sole tyre supplier in Formula One, following Bridgestone's decision to withdraw from the role at the end of 2010.[22][23][24] Pirelli previously competed in Formula One from 1950–1958, 1981–1986 and 1989–1991.

Controversy surrounded Pirelli's Formula 1 tyres as at the 2013 British Grand Prix seven Pirelli tyres failed: Pérez twice, Alonso, Hamilton, Gutierrez, Vergne, and Massa. Following a safety car period drivers were instructed to stay off the kerbs that were later found to be "razor sharp" and may have been the cause, but the president of the British Racing Drivers' Club rejected the idea that the kerbs could be at fault, saying that "These kerbs have been in since 2009 and we have had thousands and thousands of cars go over these kerbs and they have been absolutely fine".[25] The incidents were described as "unacceptable" by F1 drivers.[26] It was later suggested that the cause of the tyre failures could be the teams putting them on the wrong side of the car. Pirelli stressed that the tyres are of an asymmetrical construction and are not interchangeable, and that if they are used correctly, they do not pose a threat to safety.[27] However, the fault was ultimately found to be in Pirelli's design of the tyres so Pirelli changed the construction of the tyres to prevent further incidents.

Pirelli suffered further tyre problems at the 2013 Belgian Grand Prix. During the second practice two tyres failed: Vettel and Alonso. One senior figure at Pirelli described the failures as a "big concern", whilst Pirelli's motorsport director Paul Hembery admitted the tyre failures were "a worry for the sport".[28] Following these issues, just one day later Michelin announced that they could replace Pirelli as the tyre supplier for 2014. In October 2013 Fernando Alonso complained that "the quality of the tyres is very on the limit", and that they "will not do 5km". Pirelli motorsport director Paul Hembery said: "Of course Alonso is one of the great F1 drivers, so to hear such comments is disappointing and below the standards you would expect from such a champion.[29] In the Korean Grand Prix Pérez locked a front tyre heavily and then suffered a dramatic failure on the subsequent long straight.[30] Pirelli hit controversy at the Indian Grand Prix where they requested the teams run the tyres a limited number of laps due to their fragility. One senior engineer at a top team said this was the worst blistering ever experienced.[31]

In pre-season testing for the 2014 season the tyre on Rosberg's car failed, sending Rosberg into a 200 mph (322 km/h) spin.[32] The incident prompted considerable alarm, and Pirelli stated that the tyre "will not be proposed again".[33] In January 2014, it was revealed that Pirelli had signed a contract with the FIA to supply tyres to Formula One for the 2014, 2015 and 2016 seasons.[34] The Pirelli 2014 wet tyre was criticised by Adrian Sutil as "the worst I have driven" and Jenson Button "twitchy" and "they take away that grip that they gave you".[35] Later in 2014 Lewis Hamilton described the Pirelli wet weather tyres as "They're not great tyres. That's no secret".[36]

Pirelli suffered further tyre problems at the 2015 Belgian Grand Prix. During practice, Rosberg suffered a dangerous tyre delamination at 200 mph (322 km/h). Rosberg said the incident was "quite a shock". During the subsequent drivers briefing double world champion Lewis Hamilton, raised concerns in a drivers' briefing about tyre safety following the high-speed blow-out suffered by team-mate Nico Rosberg at the Belgian Grand Prix. Concerns were also brought up by four-time world champion Vettel, and double world champion Alonso. Pirelli relied on race director, Charlie Whiting, to defend Pirelli's record in the meeting.[37] During the race a tyre on Vettel's car suffered from a blowout at 200 mph (322 km/h). The four time world champion described the failure an "unacceptable", and added that Pirelli's tendency to blame failures either on debris on track or a driver going over a kerb for tyre failures was incorrect, confirming that "I didn't go off the track and out of the blue the tyre explodes".[38] Following the race Rosberg was critical of the poor quality of Pirelli tyres, saying "Vettel exploding his tyre is really poor. It shouldn't happen and that it keeps on happening, in other categories as well and today with us, and with me on Friday both of us were just so lucky".[39] The Grand Prix Drivers' Association chairman said: "We need to stop the sudden explosions."[40] Immediately after the race Pirelli claimed that excessive wear caused the blowout, blaming Ferrari for running the tyre too long. However, following a more detailed analysis Pirelli said that in fact wear was not to blame, but instead a cut had caused the tyre failure.[41] To counteract further problems at the next Grand Prix, Monza, Pirelli wanted to insist that teams run the tyres at high pressure, beyond their design parameters. However, double world champion Lewis Hamilton described these rules as a "disaster" and double world champion Fernando Alonso described them as "strange" so Pirelli was forced to backtrack on their proposal.[42] After these comments, Pirelli attempted to censor the drivers by asking them to not criticise the tyres in public in the future.[43]

The situation did not improve at the next Grand Prix at Monza. Here, Pirelli reported a higher than expected number of cuts forming in the tyres.[44] During the race, one of Hamilton's tyres dropped below the regulation pressure dictated by Pirelli, despite the tyre having been prepared by a Pirelli technician.[45] Neither Mercedes nor Hamilton were punished for the infringement.[46]

I couldnt give a rats a$$ about tire firms, but to be fair, Michelin pulled the same crap in 2005 (actually, far worse) F1 if we're talking about this. F1 is a weird weird org.

http://en.espn.co.uk/f1/motorsport/story/23920.html

 

[valentinoamoro]

Normal, or at least mostly legal driving won't be nearly hard enough to warm summer tires up to where you need them to be for any harsh upshifting - they'll warm up a little, reach a cool-ish equilibrium, and get no warmer.

You could probably get them warm enough after the first 5 minutes or so of an HPDE track session, but even that level of warm-up driving if done on the street would probably get you arrested.


Norm

Well said Norm. A lot of guys who dont know better are going for Extreme (not even Max) performance summer tires on the street. The issue is, like aftermarket brakes pads that are mild track focused, these things do not perform well unless there is a lot of heat in them.

It is virtually impossible to do that on the street unless you are charging down a twisty mountain road - which is a rare occasion for most. Most of the other time, I hate saying it, but I suspect especially in 40-70 degree weather, a tire like the Michelin AS3 will be more reliable and grippy.

If you want summer, the PSS and DW probably has the best performance when not fully warm.

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