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I'm going to get my car a present; new Summer-only shoes.

It came factory shod in 205/50's on 15x7, which has always been fine, but my new favorite rims only come 16 and 17.

What do you all consider the plus 1 application here?
205/40 on 16x7?
205/45 on 16x7?
215/40 on 16.5x7?

I can't beleive were talking much change in overall height and width from 15 to 16 inches. Of course I'm not interested in brake line or fender lip damage.

5Speed
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You might check out http://www.tirerack.com and look at the specs for the brands/sizes you're interested in buying. You can tell at a glance the overall diameter, revs per mile, and other data. Are you seriously considering a 40-aspect ratio tire? Me, I prefer more sidewall between the potholes and my expensive wheels. JMHO.


UncleLee
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Okay, I'm bored and playing with Excel.  Here are the possible 
combinations of tire width/aspect ratio on the 16 and 17 inch rims.  
The diff column is the percent change in the diameter/circumference of
the tire.  You'd probably prefer to have that be positive rather than 
negative, since the overall diameter will decrease as the tire tread 
wears.  Remember, +diff and you're going faster than the speedometer, 
-diff is slower than what the speedo says.


The closest overall combination is the 215/35 on a 17" rim, but it's up 
to you if you want to go that low profile.  Higher cost, generally 
better handling, reduced comfort.  Given the choice, I'd always go up a 
width, and try to offset with a lower profile.  I pushed my GS-R from 
195/55 to 205/50 on the stock rims with no problems.  

	width	ratio	rim	total diam.	diff
stock	205	50	15	23.07086614	0
	205	40	16	22.45669291	-2.66%
	205	45	16	23.26377953	0.84%
	215	40	16	22.77165354	-1.30%
	215	45	16	23.61811024	2.37%
	205	35	17	22.6496063	-1.83%
	205	40	17	23.45669291	1.67%
	215	35	17	22.92519685	-0.63%
	215	40	17	23.77165354	3.04%

If anyone wants a copy of the excel formula or spreadsheet to play 
around with, just post or drop me an email.

Gotta go play with the numbers for my car.....hmmm, if I had 18s 
instead of 15s....

Hope that helps,

Jeff




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What do you all consider the plus 1 application here?

The fine folks over at miata.net have built exactly what you are looking for. Stop by their wonderful tire size calculator at http://www.miata.net/garage/tirecalc.html and experiment to your heart's content.

I also second the tirerack.com recommendation for once you've chosen the tire/rim combination you prefer. They're great to do business with.

Enjoy, and keep the revs up!
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I can't beleive were talking much change in overall height and width from 15 to 16 inches. Of course I'm not interested in brake line or fender lip damage.

You should be, Mike... be very careful with the offset of the wheels you consider. You're not making much of a change in diameter perhaps, but as the width of the new wheel increases, proper offset will determine success or failure in your attempts not to build a homemade wheel-well grinder.

- Sco
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You should be, Mike... be very careful with the offset of the wheels you consider.

Who's Mike? ;)

Thanks fer the advice. That Miata-site tire size tool is very cool. My priority is summer-only tires, not a large diameter. I don't believe in mount and dismount, mount and dismount, so I need a set of rims. I've been all over Tire Rack and Discount Tire, ands so many rims just don't thrill me; that's why I was looking at the Konig Glide in black, 16" unfortunately.

Since I live in road-salt/pothole land, I don't want to go lower profile then 50-series; I've bent rims here before. Plus, I do not want to be associated with the Low rifer/Civic Si/Folgers can exhaust/subwoofer crowd.

I just gotta find 15x7 wheels that I like. I'm so damn fussy.

5Speed; aka Chris, which scotaku will remember when I buy him a few rounds someday.
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I just gotta find 15x7 wheels that I like. I'm so damn fussy.

=======================================================================

Whatever happened to those nifty BBS alloys of yesteryear? With the criss-crossed spokes? Saw them mostly on Beemers.



UncleLee


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Sorry, Tire Rack does not have any tires available for 1966 Chevrolet models.


<sigh>

Cheers!
~mx

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Sorry, Tire Rack does not have any tires available for 1966 Chevrolet models.

=======================================================================

What? They don't sell Mickey Thompson drag racing slicks? <BSEG>



UncleLee



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What? They don't sell Mickey Thompson drag racing slicks? <BSEG>

UncleLee



Not a one! Can you believe it? I really should drop em a note and complain...

Cheers!
~Markux
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D'OH! Now I look like a fool! (small f)

Am I smoking crack or have I also mistaken you for an A3 VW GTI driver? If so, disregard these next few keystrokes...

15x7 for a GTI should be easy to come by without jeopardizing your setup with too great a difference in offset. If any of the stock wheels float your boat, there are wheel shops that will do custom widths and balance them better than new. Check the Scirocco cover story at vwvortex.com... Paul is a new friend o' mine and that's his rocket... er, daily driver. He had a set of Panasport lookalikes made that are da bomb.

Sco Gotta collect on those brews...
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