NOOB wheel questions - 17x7 with ET42 - 215/45R/15

[snowboarder_lgt]

I just got a set of wheels with tires - 17x7 with ET42 - 215/45R/15

I have been reading a lot about different offset, wheel, and tire sizes and have a few questions.

1) Will these be a safe fit for my car (98 GT sedan)

2) Will i have any rubbing or problems?

3) Would a different size tire be better?

4) How fast would the wheel bearings actually wear out compared to normal wear with stock wheels?

Thanks in advance for the help!

[Huffer]

Well for starters if you really have 15" tires they won't work on your 17x7 wheels.

17x7 with ET42 - 215/45R/15 = 17" wheel x 7" wide, offset +42mm, 215 track width, 45% profile, 15"???

1) Assuming you have a 17x7 ET42 w/ 215/45/17 tires - YES
2) No - unless you're lowered. I'm assuming you have a stock suspension. You may rub on the rear corners or under heavy load.
3) Better for what?
4) A little quicker, but that depends on more than just your wheels. It depends on your driving, and the age of the vehicle.
How long is that piece of string again?

[snowboarder_lgt]

Oops my bad!! 215/45/17... Typo, and thanks huffed for the info!!

Also I meant would a 215/40/17 or other tire size it better? Thanks again!

[Huffer]

215/45/17 fits your speedo best, for a 17" wheel.

Use this calculator:
http://www.miata.net/garage/tirecalc.html