Quote:
Originally Posted by grumpysnapper
I feel its a little too simple to say there are no real benefits/performance increases to 16's.
A quality tyre with a decent side wall actually can improve function on most less than ideal surfaces
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yup, like off road or rally (something most people don’t do or at least build this car for) on a track or normal road lower profile tire will have better handling and response and the larger wheel gives more options for better brakes. Often lower profile tires can have slightly better fuel efficiency as well. Aside from off road/ rally bigger profile tires only real advantage is comfort which stock size profile is still just fine at.
Quote:
Originally Posted by grumpysnapper
We will have to agree to disagree on the final drive gearing.
Our cars are not exactly rocket ships (without FI)
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You outlined opinions. i mentioned facts for the reader to determine for themselves what is right for them. This entire thread is an FI thread, NA and FI should not use same FD ratio. 5th in MT and 4th in AT is 1-1 gear ratio your acceleration drastically falls off once you shift to an overdrive gear (6th for MT 5/6th for AT) meaning the top speed of your 1-1 gear is what you’re really able to use and have fun with. With FI hitting 120+ is no problem, using an FD like 4.66 makes 5th top at 112mph you will be wishing you had more gear with FI. For general use i wouldn’t go higher than 4.3 for this reason. For specific use like track or auto x their is a specific method in choosing what ratio is best but chances are with FI it will still not be over a 4.3, many FI choose to go lower like 3.7-3.9. I went from a 4.1 to 4.56 When NA it was one of the best performance mods i did. Then i went FI and i hated that ratio, swapped back to 4.1 which was better but combined with a 255 tire i wished for a tiny bit more acceleration, then switched to a 4.3 ratio which was perfect. at 250-300whp 4.3 is perfect for general use. Also traction becomes a bigger and bigger issue with FI and more power a more aggressive FD like 4.56 or 4.66 makes traction that much worse.