18x8? 18X9? HELP??

[DannyO8Gti]

Rightio lads away to be investing in a set of BBS Ch Reps at a really decent price but im kinda confused when the guys saying he has 18x8 and 18x9? Is there much of a diffenece? All input is welcome 

[E30Dom]

Will need the offset too buddy... 18x9" would be fine with 225 tyres(stretched) if offset is right...

Personally i'd stick with 8x18" on the front...

[DannyO8Gti]

Would i be correct in saying ET45? yeh i would like to get stretched tryes on them so what tyres would i need for that? 225/45/18? also the plan is to put lower it on eibach sportlines? would everything work with 18x9?

[higher1]

8x18 on the front and a 9x18 on the rear for the staggered look I would run a 215 on the front and a 225 on the rear there would only be a little stretch that way et 45 is perfect and will be fine on eibach sportline springs

[DannyO8Gti]

so ideally what im after is 2x 8x18 and 2x 9x19 215/45/18 on the front and 225/45/18 on the back and will look sweet on sportline springs?

[higher1]

Yes but 40 profile tyres NOT 45 they will be to big so 215/40/18 and 225/40/18

[DannyO8Gti]

Thanks very much mate :D

[danishmkvgti]

Yes but 40 profile tyres NOT 45 they will be to big so 215/40/18 and 225/40/18

40 percent of 225 is 90
40 percent of 215 is 86
45 percent of 215 is 96,5

so a 215/40 will give a lower diameter and 215/45 gives a higher diameter than a 225/40 tyre FYI.
Also take into account that the diameter will be lowered further due to the tyres being streched, the back on 9" more than the front on 8".
My opinion is 4x 8" ET45 and 225/40-18" hazzle free