245/40-18 tire on RX-8 rims with stock suspension...yes I "Searched" !

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fasteract

Member

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2008 MS3 GT

• Apr 7, 2011

• #1

Has someone put a 245/40-18 tire on an RX-8 rim on their MS3 (mine is a '08) and gotten away without rubbing with no load in the back and without fender rolling, stock height...rubbed only on the back..front..both? Your experience/reply much appreciated.

 

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CnoTataymo

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13 MX-5

• Apr 8, 2011

• #2

I ran Kumho SPT's in 245/40's on RX-8 wheels at stock height. I never rubbed in the front but my rear fenders are rolled, so I didn't run. With people riding in the rear seats, if you hit a dip or bump going decently fast, you'll must likely rub. Just get the rears rolled.

 

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spdjnke

Member

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08.5 CWP Speed3 GT (sold)

• Apr 8, 2011

• #3

just curious WHY do you want to go with 245? 235 is more then sufficient....

 

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DocBeech

Member

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RX8

• Apr 8, 2011

• #4

Probably looks. Its one of the better fit wheels on the RX8. It evens out the sidewalls properly, and provides a better footprint. Really the RX8 should have come stock that size tire, and yes I know this is the 3 we are talking about.

 

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CnoTataymo

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13 MX-5

• Apr 8, 2011

• #5

I ran 235/40's, they were okay. I like the meaty tire look and 245/40's on the RX-8 wheels looks best IMHO. Plus, tires are still cheaper than the stock tire size depending on which tires you go with.

 

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fasteract

Member

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2008 MS3 GT

• Apr 8, 2011

• #6

spdjnke said:

just curious WHY do you want to go with 245? 235 is more then sufficient....

Click to expand...

I have the op to buy a set in this size, 245/40's, for poco dinaro.

 

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spdjnke

Member

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08.5 CWP Speed3 GT (sold)

• Apr 8, 2011

• #7

Well I understand your getting them for cheap but you might be asking for more issues then the prices is worth, just my .02

 

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Rotus

Member

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07 MS3

• Apr 11, 2011

• #8

I run 235 on RX-8's and I rub. It's rare, but I rub.

 

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dastpe

Member

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08 MSP 3

• Apr 22, 2011

• #9

Rotus said:

I run 235 on RX-8's and I rub. It's rare, but I rub.

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i run 235s on rx8 with 5mm spacers in the rear and i had to roll. no spacer = no rub. i am lowered also. you should be fine on stock suspension with a minor roll. realize that acceleration will be slower depending on the tire weight, rolling resistance, ...

 

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crazymike007

Member

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13mazdaspeed3

• Apr 25, 2011

• #10

i have 245/40/18 on +46 18x8. 08 speed3. going to drop it with h&r springs; everything should tuck with that offset

 

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Wurf

Member

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2010 CX9 Blue

• Apr 25, 2011

• #11

Even 235/40 is a tad wider than optimal for the 8" wide RX8 rim. I would only run the 245 with a 45 ratio sidewall and that's a bit much for the MS3, especially lowered. You'd need a roll front and back.
So far my 235/40 on RX8's don't rub... ever. I'm on stock susp.

 

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CnoTataymo

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13 MX-5

• Apr 25, 2011

• #12

You don't need to roll your front fenders for 245's, it fits just fine. The rears will need to be rolled for sure.