245/40/R18 on RX8 Rim for a GenI MPS3?

[Scaredycrow]

Time for new tryes

Looking at my options, I'm running the Seriers 1 RX-8 Rims, with mazdaspeed lowering springs (stock camber arms though)

Options:
- 225/45/18 <-- Not going these
- 235/40/18 <-- Good cause they are wider and cheaper
- 245/40/18 <-- Wider again (yes im a lateral grip whore) unknown pricing at this point.

Questions:
- Has anyone here run these? Seems like a popular choice on the RX8 forums.
- Is it likely to rub? (its going to be 10mm wider...)

I want to avoid a guard roll of I can!

Thoughts/opinions appreciated!

[Nexus]

You won't be able to go 245 without a savage guard roll. In fact pumping them a bit would probably be necessary.
215/45 on 18x8+48 will rub in rare circumstances
So 235/40 on 18x8+50 (RX-8 rims) will probably need a roll
I'm on 225/45 wrapped over 18x7.5+48 and while most mainstream tyres are fine with no rub, if you go KU-36 or Falken RT-615, a roll becomes necessary to completely eliminate likelyhood of rubbing.

Time for new tryes

Looking at my options, I'm running the Seriers 1 RX-8 Rims, with mazdaspeed lowering springs (stock camber arms though)

Options:
- 225/45/18 <-- Not going these
- 235/40/18 <-- Good cause they are wider and cheaper
- 245/40/18 <-- Wider again (yes im a lateral grip whore) unknown pricing at this point.

Questions:
- Has anyone here run these? Seems like a popular choice on the RX8 forums.
- Is it likely to rub? (its going to be 10mm wider...)

I want to avoid a guard roll of I can!

Thoughts/opinions appreciated!

[MattMPS3]

I have gone from a Kumho KU19 235/35/19 on a 19 x 8 +45 rim to a Kumho KU36 225/40/18 on a 18 x 8 +45, the KU36, although narrower on spec, actually has an equal if not slightly wider footprint than the KU19's, I did have the odd rub with the 19's, and Im sure the 18's will do the same if I try hard enough, I am also running Eibach springs so the car is a little lower than stock.

[Scaredycrow]

Duly noted. I'll stick with the 235's this time around, but might consider 245's and a guard roll down the track

[240MPS]

Duly noted. I'll stick with the 235's this time around, but might consider 245's and a guard roll down the track

Mine are 235/40/18 with +46 offset get slight rub right on the edge of the tyre with load and left hand twister bends when new,less and less now it must of been 1mm out and i haven't touched the lips now it's fine unless i have 3 people in the back and it's only the back passenger side only ...

[Scaredycrow]

Mine are 235/40/18 with +46 offset get slight rub right on the edge of the tyre with load and left hand twister bends when new,less and less now it must of been 1mm out and i haven't touched the lips now it's fine unless i have 3 people in the back and it's only the back passenger side only ...

Mmm that's what I'm concerned about, raodtrip in Jan wil have 4+ people in the car with 2 weeks worth of luggage. Safe to say that the car wil be FULLY loaded.

[YOU LOSE]

I'm running 245 x 35 x i8 + 48 offset on the rear with lowered coilovers with gaurds rolled woukd not recomend them for 4 ppl in the car

Col

[2XS]

I have 225/40 on RX8 rims on the rear. The narrower tyre on the wide rim actually holds the sidewall in place, so less sidewall flex when cornering. No gaurd rolling, I have no rub ever, even with 150kg+ in the rear.

[laser beam]

Bump for an old thread.

Seems like I might be able to get away with 245/40s on RX8 wheels (18x8+50) with guard rolling? Can anyone kindly confirm? Thanks

ps: mps6 with h&r springs

[03blk]

Bump for an old thread.

Seems like I might be able to get away with 245/40s on RX8 wheels (18x8+50) with guard rolling? Can anyone kindly confirm? Thanks

ps: mps6 with h&r springs

Hey there.

Glad you asked!

I'm running RX8 rims on my Gen 1 MPS with this setup;

front: 225/40
rear: 245/35. See here for pics;

http://www.ozmpsclub.com/forum/membe...hotoshoot.html

Clearance is okay at the rear. I'm lowered on coilovers and the firm setup stops the tyres from rubbing. I would like the rear lowered a little more but will require some guard rolling for clearance.

IMO 245/40 are a big baggy tyre and look a bit silly on 18x8's. Also the 245/35's lower profile gives the same grip will less side wall movement.

235/40 is the most popular size for MPS 6's on RX8 rims. Guard rolling will be needed for sure if you go for 245's on an MPS6.

Tom