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Been looking at some new Enkei rims for the Series II and have narrowed it down to the BXM2 or the RPF1.

Having spoken to wheel and suspension people, they have all said that only 17" rims in the BXM2 will fit and the 18" ones won't fit.

Haven't been able to find out what the offset is for the BXM2's but did find the sizes for the RPF1's which are:

17x7 +45

17x8 +35 or +40

17x9 +35 or +40

18x8 +35

18x9 +35

The OEM rims are 16x7 +40 with 225/50x16 rubber

My understanding is that as far as rolling circumference goes, the closest match would be 17x7 with 225/45/17 or 18x9 with 245/35/18 rubber so the only issue would be rubbing due to offset.

Seeking advice on whether the 18's would fit and for those that have 18's what the offsets were (the previous rim and tyre threads mainly talked about tyre sizes and rim width)

Pics of the rims attached

Any help would be appreciated.

Cheers, Al

BXM2

post-1027-1168089832.jpg

RPF1

post-1027-1168089881.jpg

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post-18577-1168139679.jpg

My Series II was complied with 225/50R16's.

I had fitted Speedy Envy Mk II 18X8 wheels which have a 38 pos offset.

The wheels were fitted with 235/40R18 Goodyear Eagle REVSPEC RS-02 tyres.

Even with SK Group Buy on suspension I had no rubbing or other issues.

your rolling diameters (for comparison) are:

225/50R16 - 631mm,

225/45R17 - 634mm - 3mm o'size,

235/45R17 - 643mm - 12mm o'size,

235/40R18 - 645mm - 14mm o'size, and

245/35R18 - 629mm - 2mm undersize.

In the ACT you can legally fit a wheel/tyre combination to your vehicle as long as it is not over/under size by 15mm. As can be seen with the above combinations - they are all legal.

Why fit a 245/35R18 tyre? This is not a common tyre and would cost nearly twice as much as the far more common 235/40R18 fitment!

My Speedy wheels may well be for sale - if inteested pm me.

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Thanks for replies

So if I get this right, as long as I went for something with an offset in the range of say +35 to +45 (ie 5mm either side of OEM) then this should be okay?

ie say 18x8 with +35 should fit

The only reason I put the 245/35/18 on there as that is the closest tyre size for rolling diameter to the original sizes

All I need now is to find out the offset on the BXM2's

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Found this: http://www.1010tires.com/WheelOffsetCalculator.asp

very handy (if it is accurate)

going from 7" +40 offset to 8" +35 gives you 8mm less clearance on the inside and extends 18mm further on the outside.

Sounds like the goods to me.

Cheers

Luke

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Found this: http://www.1010tires.com/WheelOffsetCalculator.asp

very handy (if it is accurate)

going from 7" +40 offset to 8" +35 gives you 8mm less clearance on the inside and extends 18mm further on the outside.

Sounds like the goods to me.

Cheers

Luke

What sort of tolerance is there to play with clearances?

Thanks for the offset calculator

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i've had 19x8.5 enkei rp03 at 22p offset on. sat flush in the rear, and under the guards up front by about 6mm. on coilovers with standard guards, no rubbing.

i now have 17x9.5 sparco at 35p with 5mm spacers on rear and 20mm on front. it's hella flush with the guards and looks tuff.

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Was doing some more searching today including the excellent 1010 Tires site and came across Meggala's site with a listing of wheel and tyre sizes

I had forgotten about Meggala's site as he was active on SAU years ago

Here is the link:

http://meggala.com/wheelsoffsets.htm

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