More on wet racing...

More on wet racing, and interesting read:

Source

Note: We'll be racing high/low grip reduction to give a balanced wet/drying race experience...

Wet Racing IN GT5

Just noticed another anomaly/glitch, but it may be designed that way due to the game options. I figure I'll be putting this here as you can use it to your advantage (all A-Spec races have Grip Reduction set to Low).

GRIP REDUCTION & RAIN TYRES

All tests are done using a fully-tuned NSX-R (because I'm most familiar with it) at High Speed Ring Wet (because it's the simplest wet track, minimizing mistakes and other factors in laptimes) in Practice Mode. SRF off, all aids off except ABS at 1. Settings stock, except brakes at 4F/2R.

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Grip Reduction - Low

Rain Tyres - Worst choice. NEVER use Rain tyres if GR is set to Low. Car slides like noodles on wet chopsticks. Little traction on straights or grip in corners. Wheelspin very easily. But still controllable (barely).

Intermediate Tyres - Best choice. Use this if you're not confident in wet weather driving. High cornering grip. Straight line traction a bit low compared to Slicks (see below). Laptime a bit slower than Slicks (1-2 secs), but more consistent as driving is easier.

Racing Soft Tyres - 2nd best choice. Use this if you're skilled in wet weather driving. Cornering grip is around 70% of Inters, but straight line traction is far superior. Almost no wheelspin when accelerating straight, but severe understeer when cornering requires skill to negotiate. Fastest laptime, but harder to drive means more mistakes and less consistent overall time.

Sport Soft Tyres - Similar properties to Inters. Use this if you haven't bought the expensive Slicks which comes with the Rain tyres set.

Comfort Soft Tyres - Similar properties to Rain. Stay away from it.

Explanations: The grip reduction option does what it says on the tin, basically. The rain barely affects the grip of the road, so if you use Rain tyres with its deeply grooved surface, it's the same as using Comfort tyres in normal conditions. Driving on ice, in other words. The grip is slightly reduced however, so Racing Slicks are not as effective as in bone-dry conditions in the corners. For this reason Inters are needed to maintain grip when turning. The slight grooves does the job just right. Sport tyres (which are also lightly grooved) also give the same performance as Inters.

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Grip Reduction - Real (High)

Rain Tyres - Best choice. Same pros and cons as Inters in GR Low. Obviously the overall grip is lower than when GR is Low, but Rain tyres give superior cornering grip, at the expense of slight decrease in straight line traction. Slower laptimes (~1 sec), but more consistent and easier to drive. Use this if you're not confident in the rain.

Intermediate Tyres - 2nd best choice. Same pros and cons as Slicks in GR Low. Moderate cornering grip, but superior straight line traction. Faster laptime but more prone to mistakes. Use this if you're a pro in the wet.

Racing Soft Tyres - Worst worst worst choice. Absolute zero grip. You cannot go straight unless you're at 50 km/h or lower. It's 500% worse than Rain tyres with GR Low. AVOID at all costs (should be obvious). Try it once, just for laughs. You will never complain about Comfort Hards ever again.

Sport Soft Tyres - Same performance as Racing tyres. Craptacular, in other words. Slightly lower grip means it's more controllable when breaking traction, but that's about it. Stay away at all costs.

Comfort Soft Tyres - Again, never use this unless you have a death wish. Even lower grip than Sports, but also less sudden when breaking traction. The most usable out of the 3 dry tyres, but still useless in racing conditions.

Explanations: Since the grip reduction is set to realistic, it behaves just like in real-life. Rain tyres is the obvious choice, but those who are skilled may wish to gamble on Inters and trade drivability for a bit more speed. Keep in mind that these tests are conducted in POURING conditions. Light rain may magnify the difference and make Inters much faster than Full Wets (just like in real life too!). More tests may be conducted in the future (it's a bit difficult though, since the rain intensity is random). Dry tyres (all 3 types) are a big no-no. That much is obvious.