Because other than if a line-up includes an AC 427, none of the AI cars have the kind of ridiculous HP and power to weight ratio the AC 427 has. The AC, especially when not driven correctly will eat through tires very quickly
Having a high power to weight ratio is not necessarily going to cause your tires to ware out quickly. If a car weighed 100kg and had 200bhp it would have a very high power to weight ratio but it wouldn't ware its tires out very quickly. It is as you said the high HP that causes the tires to ware out fast, and high weight will also cause tires ware out quickly. To have a high power/weight ratio you need high power and low weight, not high power and high weight (which is a combination that eats tire tread). Unless you consider that the high power and low weight allows the car to travel at higher speeds which could potentially ware the tread out very fast however this tends to be marginal compared to the impact weight has alone. There are other factors of course including the amount of downforce, or the amount of torque at certain revs.
I hope that makes things clearer.
So if you want to keep your tires to last longer here are some tips
>Obvious first- choose the hardest compound tire possible
>Reduce as much weight as possible
>Reduce downforce as you can without compromising the car handling(this should be at a minimum anyway on the AC unless you have bought a rear wing. I don't think you can buy one for the AC but just in case you can.
>Avoid putting turbo's on your car(its fast enough to beat the AI in this race anyway)
>Check the torque curve of the AC, you may be able to avoid high amounts of torque at high RPM's by earlier shifting if you use manual transmission(It is unlikely with the type of engine the AC has but its worth a check)
>If your still pitting far to much then try whacking up the Driving Aids, preferably the Traction Control System, But increasing the Active Stability Monitoring couldn't hurt.
>Finally I would suggest try using Bob. While Bob may be cretinously slow he is a very conservative driver, with a very similar driving style to the AI, He will insist on getting as much laps out of his tires as possible.
There are more ways of being economic with your tires like tinkering with your suspension setup but it isn't worth worrying about to much. Most of these can be applied to all endurance events.
If anybody feels I have missed anything please feel free to pitch in
AFAIK only cars with a max wideness of 2000mm are allowed, could be wrong though.
