Lenso 13 x 7.5 wheels with 225 50 13 hoosiers.

[alex]

I'll echo the above comment that with such a short wheel/tire combo, he's gonna be doing alot of 2/3 upshifts, unless he can find a DSP legal way to make it turn 7400+rpm!

Not with those stock rocker arms you wont!

You can easily have a custom chip made with that many rpms before the limiter. However, the longevity of the motor might become an issue.

[alex]

Funny thing is I was simply curious about anyone using these and just by the response alone, it made me want to try it.

You will always have people that will bash your ideas no matter how good they are. Also, you will always have people that praise your ideas no motter how bad they are. Some people are affraid to try anything new and will try to convince others not to try anything for many reasons, for example: 1. They tried it and it did not work for them; 2. They have heard from someone that knew someone that have heard that someone had tried it and it did not work. 3. It does not work in theory.

Until you try something yourself or witness a test with controlled conditions you most likely will not determine if something works or not. Think about how much testing professional racing teams do. If everything worked on the track that worked on the paper racing would be a lot cheaper and a lot more predictable.

As I have mentioned to you earlier, the best thing would be to go out during test and tune type event and run different tire/wheel combinations and see what works better. You do need to control the conditions, i.e. time between runs, tire temps, tire pressures, suspension settings etc.

The biggest problem I have with 13" wheels is that you have to modify your essential suspension components in a way that will present a potential hazard because of the reasons I provided above. Otherwise, "may the force be with you."

If I could get a wide, light, and short tire I would run it all day long. Unfortunately, the current trends in auto industry do not allow for that to happen. Another problem that you wind is lack of RPMs that lightly modified M20 can or rather cannot withstand. I'd love to have 8k revving M20, but that would most likely put me in Prepared or Street Mod and I really don't want to be there running agains cars that have over 400 horses.

Hope this explains my position better.

Again, I'd love to see the results of your testing.

[Rich V]

I'll echo the above comment that with such a short wheel/tire combo, he's gonna be doing alot of 2/3 upshifts, unless he can find a DSP legal way to make it turn 7400+rpm!

Not with those stock rocker arms you wont!

You can easily have a custom chip made with that many rpms before the limiter. However, the longevity of the motor might become an issue.

I did some testing on my E30 when I had the Tec3. The car would snap rocker arms frequently if I bumped the revlimiter up to 7,000 rpms from the "stock" chipped 6,900 rpms. If you got to 7,300+ you would bent valves. Expensive testing... :(

[Charlie]

I'll echo the above comment that with such a short wheel/tire combo, he's gonna be doing alot of 2/3 upshifts, unless he can find a DSP legal way to make it turn 7400+rpm!

Not with those stock rocker arms you wont!

You can easily have a custom chip made with that many rpms before the limiter. However, the longevity of the motor might become an issue.

I did some testing on my E30 when I had the Tec3. The car would snap rocker arms frequently if I bumped the revlimiter up to 7,000 rpms from the "stock" chipped 6,900 rpms. If you got to 7,300+ you would bent valves. Expensive testing... :(

Yikes. My current chip has the limiter allegedly set to 6900, but it will spin to 7k on the tach with no hesitation, and will see that coming out of turns quite often. That makes me a little nervous.

-Charlie

[joshh]

Thank you for that reply Alex.

I in no way meant this was the winning combo. If I have to spend too much money to make this work I won't be doing it.
If I end up doing it I will post my findings here. Thanks.