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Discussion Starter #1
Can I fit 255/45's on my base 18x8 wheels? Just want to make sure this isn't too wide before placing my order...
 

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I would go by the manufacturer's recommendation since there are a lot of factors and, believe it or not, not all tires are perfectly true to the size they should be.
 

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We can fit 275 on 17x8 so I don't see why not
Ok cool thanks, cause i'm buying new tires in a couple weeks and been having some traction issues.
With 17x8 you have a bit more sidewall to work with. I don't see many 275s fitting on 18x8s since I could barely find any to fit on 18x9s.

Op, please check the manufacturer specs for tires. This will tell you what will fit abd what won't. It will only take seconds of research.
 

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Discussion Starter #13
I went with the 255's and it's noticeably wider and drastically improved traction. If I were you I wouldn't go any wider than this...I think there would be too much sidewall bulge.
 

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I put removed my stock 235-50-18's and replaced them with nitto's 255-45-18 because it is very close to the stock height and I believe it is the widest tire that could be mounted on the stock rims.
 

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I put removed my stock 235-50-18's and replaced them with nitto's 255-45-18 because it is very close to the stock height and I believe it is the widest tire that could be mounted on the stock rims.
What gear are you running? The stock 235/50/18 is like 27.25 dia which with 3.73's or 4.10's will have you shifting into 5th in the 1/4. 28in tall for 3.73's 27 for 3.55's and 26 for 3.31's is ideal. I have 27.03 dia with 3.31's and its a TURD!
 

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Look at it this way, 280 is 11 inches, so 275 is just 5 mm under 11 inches, and your wanting to put these on an 8 inch rim? That will distort the sidewalls.
 

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I also was asking this same question for i have a 16 mustang GT with the 18x8 Stock wheels...i wanted to see if i could get 275 45 18 on there....Original Tires were the Perilli PZero 235 50 18...I put the Firehawk Indy 500 255 45 18 on rear and wow, Traction was solved but now i want to put the 255 45 18 in the front and see if i can get 275's on those wheels.......has anyone here ever done that?
 

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Why do you want such wide tires on a 8" rim? For looks? It'll ride and perform like ***. 255 on a 8" rim has a nice bulge without being too much, 275 on a 8" wide rim is ridiculous and pointless.


If you want wider tires than 255, get a wider rim and then get an appropriately sized tire.
 
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