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Got Rims now need Tire sizes!

1751 Views 9 Replies 7 Participants Last post by  Stoenr
i recently bought some rims for my car.. 18X'9s.. i dont know what size of tires i should get though?? What combo should i do? Bigger in back and small in front or same size all around? what "safe" sizes will get me that wide aggressive stance?
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I was thinking that 295's or at least 285's in the rear with maybe 255's up front. If you want the option of doing full rotations to get more out of the tires then you could go 275's all the way around.
If i had it to do over i would have gotten 255/45-18 all the way around. That way i could have rotated them. It is hard to notice the difference between the front and the rear, they are both fat.

Good Luck:drink:
255/45/18 or 285/40/18.

Those are the two sizes that will come closest to the stock tire diameter. (keeps your speedometer accurate)
On a 18 x 9 wheel the 255/45/18 tires are the same diameter (within .1" of stock) as the 235/55/17 OE tire. Also, the 285/40/18 tire is the same dia as stock. The 255's are an inch wider than the stock tire. The 285's are two inches wider. You could go with the 255's all around, or do the 255's front and the 285's rear. Check with the tire mfgr to see if your 9" wide wheels will be compatable with the 285 tire size. All the tire mfgrs have charts with the min/max wheel widths. Most all the tire mfgrs have the 255/45/18 size, but the 285/40's are more difficult to find. I've found two: BF Goodrich T/A KDW and Toyo Proxes. I have the BFG's and like the handling and ride.
If you want compare tire sizes for speedometer accuracy, check out this link http://www.canadiandriver.com/tools/index.htm and click on tire calculator and comparator.
05GT68RSSS said:
On a 18 x 9 wheel the 255/45/18 tires are the same diameter (within .1" of stock) as the 235/55/17 OE tire. Also, the 285/40/18 tire is the same dia as stock. The 255's are an inch wider than the stock tire. The 285's are two inches wider. You could go with the 255's all around, or do the 255's front and the 285's rear. Check with the tire mfgr to see if your 9" wide wheels will be compatable with the 285 tire size. All the tire mfgrs have charts with the min/max wheel widths. Most all the tire mfgrs have the 255/45/18 size, but the 285/40's are more difficult to find. I've found two: BF Goodrich T/A KDW and Toyo Proxes. I have the BFG's and like the handling and ride.
What he said! add - 285's will fit on 9"

but id like to rotate them bad dogs around the car so 255/45 will be my replacement size. Should I sell the stocks when they're new or burn em up?
I have some 275/40/18's coming in a few weeks. THat should give it an aggressive stance and not push the limits of the tire on the rim (18x9).
nbk13nw said:
I have some 275/40/18's coming in a few weeks. THat should give it an aggressive stance and not push the limits of the tire on the rim (18x9).
But that size will be smaller than stock and your speedometer, odometer, and tripometer will be off.
Nothing a tune couldnt fix, but gaining more wheel well space!
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