PsssTkiD

thanks everyone.

i appreciate all your help :-)

PsssTkiD

but wait... the 225 should be okay though right??.. since my rims' width is only 7 inches.

vadim

Width is fine for the rims. The difference in diameter is 0.1%, which is perfect.

This link may answer some of your questions regarding tire sizes:
http://www.miata.net/garage/tirecalc.html

Deutscher_Wagen

LOL... I use that site at least once a day

pixelfreak

Hi Guys!
Is it okay to mix tire rating? My friend got a C-230 with V-rated Michelin tires (tires used for 2 years) and he needs to replace one of them because it is defective (separated). However, he is selling his car soon so he is wondering if he could just replace them with a cheaper H-rated tire (same brand). Would it matter so much to have three 2-year-used V-rated tires with one new H-rated tire?

Thanks!

wingless

This Tire Rack technical article on Selecting The Right Tires has the requested information.

tyro

For safety and handling reasons, it is a good idea to mix and match tires.

SpicyC320

Hey Everyone,

Thanks for all the great help. It's almost time to get those new tires.. though I am thinking about waiting a bit longer (around summer) so I can get a set of 4 (versus just 2).

Does anyone have experience with the Michelin PS2s? I'm thinking about going with those if I get a new set since their rating at Tirerack.com is better than the OEM Pilot Sports.

Janice

vadim

Janice--

I suggest you go to the TireRack forum, read all the sticky's and ask Luke if you have any specific questions - he is the resident tire guru here.

r3v1ls

Hrm that sounds quiete early for a tire change, i can't really help out cuz i have the 16in rims with w/e michelins are on there. I regularly check tire pressure and everything, and they have been rotated about 3-4 month ago. I drive the car pretty hard, i do donuts, burnouts, buncha stuff that would eat the rubber up, but there is still plenty of tread on them and few wear. I can't believe that your tire pressure never changed, i check every 2 month n sometimes i have big psi drops.

SpicyC320

It does seem pretty early for a tire change. I have 10650 miles on them now. Trying to aim for at least 12000 but I doubt it will be safe since the tread indicators are already visible on the rear tires. At first I thought maybe it is the tire pressure bc I didn't check the psi regularly.. but SA told me it is acceptable when I had my tires looked at. Not sure what went wrong.

PsssTkiD

i mean, in width,

since its the widest tire i can put ..... will it look like the sidewall is about to pop out?... kinda like a tire that needs more air pressure?

blkw203

I have some BBS RS GT wheels that I am putting on my C230K Sedan. The wheels are 19x8.5 +38 and 19x9.5 +38. What size tires should I run? I am thinking for the front 235/35/19 and rear 245/35/19. What do you guys think? I bought the wheels w/ tires already. The tires are Bridgestones Potenza S-03, front 245/35/19 which I think is rubbing on the perch, rears are huge with 275/30/19. Thanks.

nukblazi

What suspension? What are the ET of the front wheels?

scottisha

Went through about 20 threads and they were all focused more towards those going to an 18 or 19" rim and tire.
I was wondering if anyone has went a size or two wider on the rear while maintaing the 40 series sidewall. I'm already due for a new set of rears and would like to go a size or two wider, but I don't want the tire looking too tall compared to the front.
Thanks in advance,

Scott

amdeutsch

Good for you.

Now, mathematically speaking; you should be able to go to a 255/40-17 on the rear without affected the workings of the ESP.

Here is a detailed tire size calculator dealing with more than just size. German only - Sorry

blkw203

I have H&R springs. My friends and I tried to drive my car. The car would only roll for 2-3 inches and then something stops the car from rolling. We checked if the wheels are hitting something but to us there was nothing we can see. We are thinking that it might be the gear box that may be locked. But, I don't know. Got any ideas?

nukblazi

You'd hear it if the tires were rubbing. Did you check wheel bolt length? If they are too long, they will hit the e-brake mechanism on the right rear.

essa

Check the lug nuts....Original lug nuts are much longer.
If you have the sport break caliper (esspecially on an 05 C230K), maybe your front rims didn't clear the caliper.
Check if your front tires are not rubbing against the shocks. It may clears the front spring perch but the width and offset of the rims may cause it to rub against the shock body.

JWS3

Auto mags have had several articles noting how large wheels are heavier and actually lower overall performance/handling. 17-18" is proabably about as far as you should go.

scottisha

I was more concerned about rubbing and appearance....
Here's a link you can bookmark, it's in English.tire size calculator in english

amdeutsch

Thanx. The one I linked goes into more depth than just size and speedo error. It gives a better understanding why MBs come with 245 rear when mathematically a 255 would be more appropriate which is what that miata site does.

essa

255/40/17 would be fine...you won't rub even if you lowered the car. Any wider would look tacky. Get a rounded side wall instead of the square one....

blkw203

This is what we did...
On the rear wheels: Put 10mm spacers to clear the shocks with 50mm lugs (knowing that the stock lugs are 40mm, we extended the lugs because of the 10mm spacer). Maybe the lugs are too long?
On the front wheels: Put 10mm spacers to clear the break calipers with 45mm lugs.

So, maybe I should replace the 50mm lugs to 45mm on the rear wheels? The front wheels should be fine then right? Because I do hear the noise from the rear right wheel. This is great information. Almost there.

scottisha

Thanks for the help.....

Scott