I need to know about a new way to fit suspension in my car (F3) type .So if you have any new idea let m know because I need it implement in my car

You are aware of all the subtle intricacies of suspensions and vehicle dynamics? Not to mention all the unknown variables. I guess no because your question is far to simplistic to be serious. What tire should you use is a far, far simpler topic and you could write a book on that alone.

I have new ways but I'm waiting for negotiations with Elf Racing to come to fruition.

DrRacing's Blog | A race engineer and his race cars

I sort of hate to inflict you on other sites, so try a little harder to be HELPFUL with details when you ask questions.