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Discussion Starter #1
What size tires are you guys running with 17x9 wheels? My wheels came with 275/50/17 I believe. I am figuring i will need a 245 for the front but how about the 275 for the rear?
 

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It can be a bit tough to get a tall enough tire in 17" to suit an MN-12. 245/50R17 is a very close match to the diameter of the original tires. Going with 9" wheels limits the choices a bit too. If you want staggered sizes front and rear, maybe 255/45R17 and 285/40R17, which will be about 1/2" shorter than originals.


cheers
Ed N.
 

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I'm using 255/45, speedo is about 2% off. I'm going 68 when the speedo says 70. They fit very well.
 

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On the Lemons race car, we are running 275/40/17s on 17x9s at all 4 corners.
 

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Discussion Starter #5
Great info, thank you guys. I really need to nail down the tire sizes and have the tires on the wheels before i start my swap. The wheels have 275s on all 4 right now. 2 look good and 2 are worn out and need replaced. I was thinking of leaving the 2 good 275s on the back for now and then i would only need to get the 2 front tires to have good tires on all corners. Looks like 2 of you suggested the 255/45r17s. I'm not necessarily going for the staggered look, but I have 2 almost brand new 275 tires. I am just being cheap by not replacing them right off the bat.
 

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But if they are 275/50/17, they will be almost 28" diameter ... stock diameter is 26.6". Pretty sure that is going to rub, especially if the car is lowered at all.


cheers
Ed N.
 

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I have 275/45/17 on all four corners and no rubbing at all.

But I do have the SN95 swap with 17X9 cobra rims.

And also am lowered 1 1/2.

But with the fronts being so wide it tends to track any ruts in the road so I would not go that wide again maybe only go to 245/45/17. but 275 or 285 in the rear looks great.

View my pics in my photobucket.
 

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Discussion Starter #11
just to clarify my tires are currently 275/40/17s on the wheels I have. They aren't in bad shape at all. i will likely use these tires until i buy some new ones really soon. I want to see how I like the width in the front. If they don't follow the groves in the road too bad I may keep the same size on the front. I have a feeling I will want a little skinnier on the front though. I will keep everyone updated here and in my project log thread in the newbie section as well.
 

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I used to run 255/50/17 Fuzion ZRI's on all 4 corners.. had no complaints at all...
 

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But if they are 275/50/17, they will be almost 28" diameter ... stock diameter is 26.6". Pretty sure that is going to rub, especially if the car is lowered at all.


cheers
Ed N.
Ed, they'll fit. That's what I run on the back of my XR7, which is lowered 1". It isn't a common size though, so you're limited to Nittos or Falkens.

 

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Discussion Starter #14
racecougar I like the exact amount you lowered your car. That's about how much I want showing between my wheel well and tire.
 

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Ed, they'll fit. That's what I run on the back of my XR7, which is lowered 1". It isn't a common size though, so you're limited to Nittos or Falkens.
That's lowered an inch, really? I remember now that you had those big-azz tires on your Cougar, looks good. But I thought it was stock ride height, or maybe even raised a bit. Guess it's an illusion with the tall tires. Thanks for the correction in any case!


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Ed N.
 

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Yep. It has the Vogtland springs from the original GP (1" drop). Eventually, I plan on cutting just a little bit off the front springs to get just a little more rake. The 275/50R17's work well for me since they're close to the same size as my slicks (28x11.50-16), so I don't have to change the shift and TC lockup points between the track and street each time.

And thanks!
 

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255/50/17's here. Nitto INVO's. No complaints, takes a bit to file down the control arm ball joint stud excess but it doesn't hurt them any.
 

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fordfreak300,

I'm running 285/40-17 on the back and 255/45-17 on the front, with 17"x9" wheels. The tires are Nitto 555s, which I believe run a little small for a given size, relative to other brands. I had to roll the rear fender lips and use a thin spacer in the front, but overall the fit is good. I like these particular tires because they offer good looks, decent traction dry and wet, and they are quiet.
 

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Discussion Starter #19
Thank you all for this information! I have my new wheels on my car. pic is in my thread in the newbie section. I have 275/40/17 tires all the way around right now. The car is at stock ride height at the moment and there are no clearance issues. I do need to get new tires soon so I will be looking at some of the choices you guys have suggested. My car is my daily driver so it has to be good in the rain on the rare occasions it rains here.
 

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Discussion Starter #20 (Edited)
I'm going to finally be getting new tires in January and I am back to this thread. I reread all of the suggestions. I am going to stick with the 275/40/17 on the rear or maybe a 285/40/17. I want something a little skinnier on the front though. I was thinking of the 245/45/17 but I'm not sure how they will fit on a 9" wide wheel. I do not want the tires to look stretched on the wheel at all. I want the same height as I have now, just skinnier and not to be stretched on the wheels. Any ideas on the fronts?

Just to update anyone who has not read my thread in the newbie section. I have lowered my car a hair using some sport sport springs i got. I cut enough off the front to lower it about an inch and the rear I only lowered about 3/4"

Thank you again for all of your help.

Mark

Also for anyone reading this, my 275s on the front follow every groove in the road. Very annoying on my daily driver.

DOH! I over looked the very first post when rereading this somehow. I guess my real question has now become what is the height difference between a 275/40/17 and a 285/40/17.

It can be a bit tough to get a tall enough tire in 17" to suit an MN-12. 245/50R17 is a very close match to the diameter of the original tires. Going with 9" wheels limits the choices a bit too. If you want staggered sizes front and rear, maybe 255/45R17 and 285/40R17, which will be about 1/2" shorter than originals.


cheers
Ed N.
 
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