Here is a comprehensive list I put together for most of the wheels available for the Evo X.

Mitsubishi Evo X Wheel Offset Fitments:

•Measurements with stock wheel: 18x8.5 ET38 w/ 245 40 18 tires.
•These measurements are for clearance to outside fender and inside strut/shock.
•“+” means closer or less clearance to, “-“ means farther away or more clearance from.
•Stock front suspension – 13mm clear from wheel lip to strut body. 25mm clear to outside fender.
•Stock rear suspension – 22mm clear from wheel lip to shock body. 19mm clear to outside fender.
•More negative camber will provide more clearance to outside fender.
•Suspension compression will also provide additional clearance over static measurement.
•Larger tires will reduce clearance. R-compounds run wider than street tires.
•Recommended tire sizes are: 9.0”= 245/255. 9.5”=255/265. 10.0”=265/275. 10.5”=275/285
•1” = 25.4mm. Below numbers are within 1mm due to rounding rules.

Outside Fender / Inside Strut, Shock (in mm)

9.0"
18x8.5 ET38 0/0 (Stock wheel)
18x9 ET38 +6/+6
18x9 ET35 +9/+3
18x9 ET29 +15/-3
18X9 ET22 +22/-10
18x9 ET20 +24/-12

9.5"
18x8.5 ET38 0/0
18x9.5 ET38 +13/+13
18X9.5 ET35 +16/+10
18X9.5 ET30 +21/+5
18x9.5 ET28 +23/+3
18X9.5 ET27 +24/+2 (Enkei NT03-M: need spacer to clear front brakes)
18X9.5 ET25 +26/0
18X9.5 ET22 +29/-3
18x9.5 ET20 +31/-5
18X9.5 ET15 +36/-10
18x9.5 ET12 +39/-13

10.0"
18x8.5 ET38 0/0
18X10 ET38 +19/+19
18X10 ET35 +22/+16
18X10 ET25 +32/+6
18x10 ET22 +35/+3
18x10 ET20 +37/+1
18X10 ET15 +42/-4
18x10 ET12 +45/-7

10.5"
18x8.5 ET38 0/0
18X10.5 ET38 +25/+25
18X10.5 ET35 +28/+22
18X10.5 ET30 +33/+17
18X10.5 ET25 +38/+12
18x10.5 ET22 +41/+9
18x10.5 ET18 +45/+5
18x10.5 ET15 +48/+2
18x10.5 ET12 +51/-1

 

This should be stickied as I've looked for a chart like this myself.

About the recommended tires sizes it really depends on the manufacterer quite a bit, and the "measured rim width" stat that tirerack has on their tire spec charts seems to be the natural width of the tire without forcing the sidewalls inward or outward. Most if not all 275mm wide tires list 9.5" as the measured rim width and then have a range that they can be used with such as 9 - 10" or 9.5 - 11", and the wheel width range seems to vary widely from brand to brand quite a bit as well.

I've seen 265mm wide tires have a range of 9.0 - 10.5" where as 275mm wide tires in the same brand list 9.0 - 10.0" which seems a bit odd. Also differences between 18" and 19" wheels can effect it as well of course due to the shorter sidewalls. Keep in mind that wheels are 1" wider than listed from outer lip to outer lip so a 9.5" wheel is actually 10.5" wide measured outer edge to edge. An average 275mm wide tire is 10.8", 265mm = 10.4",255mm = 10.0", but you really have to check the "section width" stat to verify what the actual size is before knowing if the tires will fit well or look pinched in/bulged out. Usually stepping one range wider or narrower than optimal is barely noticeable since you are splitting .2" on each side of the wheel. For that reason 9.5" = 255/265/275 in my book, I'm not sure what the measurements come out to on the other sizes.

 

I know what you are saying about tire sizes and agree with you. I threw that bullet in there last minute as that question is also a hot topic always associated with wheel width discussion.

Remember as well that a lower profile tire needs a wider section width in the same size wheel width: A 35 series may need a .5" wider rim than a 40 series in some cases. This is especially true in 17" wheels and 40 vs 45 series. The published recommendations by manufacturers are guidelines and they don't always pick the "best" fitment, but one they wish to compare other tires to, possibly due to weight differences as one example. As a general rule of thumb, I like to increase rim width .5" over stock for the same size tires, so I would put a 245 on a 9.0" rim if I was going to upgrade to that size.

From a performance standpoint, wider rim, narrower tire within spec is preferred. I just replaced my NT01 275's with 265 R888's and 265 R1's (this one being .25" narrower than the toyo). Both fit the 9.5" rim better and are less wide when mounted. The R1 has a much squarer side wall than the R888. I was having a problem with side wall roll over on the larger 275 Nitto's with the stock suspension. That tire would do best on a 10 or 10.5 IMHO. And as R compounds they are already wider. After evaluating the Toyo and BFG as to which one I like, I may even try the 255 size to see if there is any time difference and what performs best on a 9.5" rim.

 

nice.. but, how about for guys that are doing 19" rims??

 

No difference with 19's. These numbers represent wheel offset shift and do not take into consideration the differences in tire sidewall construction and shape in addition to preference in width sizing of the tires.

 

Indeed, 18" or 19" shouldn't matter much as long as the overall diameter of the tires you are using are the same. Taller tires will require more clearance and shorter tires will require less of course.

 

would volk le28n 18" 8.5 5x114 offset 43 fit the x?

 

They would likely fit, but be about 5mm inward compared to stock which already have that sunken battleship look. Your Inner clearance to the suspension would drop from 13mm to 8mm so unless the tires used were extremely oversized it should still work. Getting 15-25mm spacers would likely reverse that quite well but the farther out you push them the more likely fender rolling will be needed.

 

Sorry, I'm a newb and I was just wondering what is the most aggressive wheel size and offset that you can put on the Evo X GSR without having to roll the fenders?

Ok, found the thread. Sorry! haha

 

So, would 18x9.5 +12 be out of the question?

 

So it's just the NT03-M that needs the spacer? Can brake clearance be determined from the spec's alone, or is it a matter of throwing the wheel on and seeing if it clears? I'm looking to get a set of wheels in 18x9.5 ET26 and want to make sure I'm not going to run into fitment issues.

 

Did anyone istall 17" on EVO X? I think of using 17" for winter.
I tried TE37 17*8.5 with offset 30 - it doesn't fit, but seems like with offset 20-22 it should fit.
ADVAN GR-II 17*9.5 with offset 22 fits the caliper, but will probably contact with outside fender, so probably 17*8.5 should fit.

 

what is the most aggressive offset for 18x9 without rolling the fender n about 1 inch drop?

 

Do the BBS MR wheels have the same offset as the GSR wheels? If not, what is the BBS offset? And that offset is +38 correct?

Yes, I have a IX and want to put X BBS MR Wheels on it!

 

they are the same