Your option on new set-up.

[TXspeed6]

Heres the deal, I'm getting a whole new tire/wheel/suspension and I want it all to work right seeing as how is going to be like $2k. I have ordered wheels, 18x7.5 45offset and tires at 225/40R-18. The price difference is huge between the 215 and the 225, I ordered the 225 because I want to fill the wheel well when I get the H&R sport springs.
But do you think I will have any rubbing?
And is it a good choice to pay extra for the 225 to fill the wheel well better?
Thanks.
Ross

[Blendercloud]

The 225 number is tire width. the second number (40) is the tire height in relation to tire width. By going with a 225/40R-18 you are getting a wider, but shorter tire.

With a 225/40R-18 you're also losing the high-speed rating. Look for a tire with a ZR-18 instead.

If you want to fill up the wheel-wells better, go with a 215/50ZR-18. You will have more rubber, but will fill up the wheel-wells better than the stock option. You stand a chance of rubbing after H&R's though. I don't really know if you would or not.

[TXspeed6]

Hmm...I will talk to the guy at discount. He said that getting a 225 would be better than the 215 to fill up the wheel well, but didn't say anything about the sidewall. I'll do some more reading and see. I just wanted the wheel well filled more when I put the H&R springs on.

[Myriad]

I'm running a set of 225/40-18s on stock rims with the H&R springs without a fender roll and have no rubbing issues. I wouldn't recommend a 45 sidewall profile since the H&Rs offer a considerable drop and greatly reduce the dead cat space you see in the stock setup.

[ravi]

FWIW- fender Rolling is not hard at all.

[Blendercloud]

I'm running a set of 225/40-18s on stock rims with the H&R springs without a fender roll and have no rubbing issues. I wouldn't recommend a 45 sidewall profile since the H&Rs offer a considerable drop and greatly reduce the dead cat space you see in the stock setup.

With your tire selection (which is what I was looking to go with) have you noticed that your speedometer isn't accurate anymore?

[TXspeed6]

Thanks, for the input, I'm sticking with the 225/40-18. But due to financial reasons I'm not getting the wheels anymore, i'm going to have to stick to the stock wheels. Thanks for the input everyone.

[Myriad]

With your tire selection (which is what I was looking to go with) have you noticed that your speedometer isn't accurate anymore?

Around town it's not a problem and at around 80 mph it's only showing about 2-3 mph faster than I'm actually going. Stepping down only one size profile doesn't make a large enough change to necessitate having to recalibrate the spedo.

[sunshineFC]

a 225/45 will do what you want.
-a

[Japan8]

Around town it's not a problem and at around 80 mph it's only showing about 2-3 mph faster than I'm actually going. Stepping down only one size profile doesn't make a large enough change to necessitate having to recalibrate the spedo.

On a MS6 at 80mph it is worse than that... more like 5-7mph difference. Checked by GPS on a 1,200 mile trip.

Additionally... tire and wheel manufacturers don't recommend a 225/40 18 tire on 18x7 (stock MS6 and MS3) wheels. It'll fit... I have a set of winter tires like that, but it's not recommended. A 225/45 18 is fine on 18x7 wheels though.

[Otacon_X]

I run 225/45/18 on a 18x7.5 +45 Advan wheel. I had some rubbing this week with a fully loaded front and back of 4 adults.....just minor though.....

[TXspeed6]

On stock suspension?

[Otacon_X]

On stock suspension?



yes


ps: im in san antonio too....where you at?

[TXspeed6]

I'm actually in Schertz area. It's north of san antonio, but i'm just a few min. from the city limits. Where are you?

[TX Speed 6]

I'm on 18 x 8 RX8 wheels with 225 45 on RPM lowering springs, no rubbing (but the H&R are obviously a lower drop). I think with the H&R's you will probably run into some rubbing issues with a full load like Otacon does

[MZR-6i]

i'm running 225 on mine and no rub on fenders even with load.....nice BMW style tuck for the fronts fenders.