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[omgshinoda]

so im planning to buy either apex arc8 or vmr 710.

for apex arc8
F 18x8.5" ET38
R 18x9" ET42

will these tires fit on stock msport suspension?
hankook ventus v12
front: 225/40/18,
rear: 255/35/18.

trying to reuse some almost brandnew tires.

[Expert@ApexWheels]

The fitment you have listed is not our recommended fitment, and not the ideal fitment for the 1-series. For our ARC-8s, we have 1-series specific fitments in 18x8.5" ET45 and 18x9.5" ET62, in which we would recommend the 235/40/18 and 265/35/18 tire sizes. The 235/40/18 street tires are generally a direct fitment for the front of a stock car, and are a great improvement in width and grip over the stock 215/40/18 front tire size. Not all 235/40/18 tires will fit. R-compounds, slicks and some other tires may touch the strut tube, requiring a spacer to fit. This fitment is tight on both the strut tube side and on the fender side, so there is little room to play with on a stock car. If a 3-5mm spacer is used to clear the strut tube with some tires, then it would be ideal to dial in some negative camber into the front suspension to help clear the fender. The 235/40/18 tires are tall and could potentially rub the plastic inner fender liner if the car is out of alignment. Plastic liner rubbing is usually considered acceptable by most owners, but it is something to look out for as the gills in the liner for the oil cooler can some times stick out towards the tire more than normal. You are able to use the 225/40/18 tires you currently have in the interim, but the suggested fitment would be the wider tires in the future.

The rear 265/35/18 is a direct fitment on the 18x9.5” ET62 wheel. There is no need to roll or run additional negative camber for this tire size on this wheel. If you would like a wider tire, you would need to make some modifications to your 1-series in order to accommodate them. If a tire that is wider than 235/40/18 is being used a 3mm wheel spacer must also be installed, otherwise the tire will start rubbing the strut or spring perch. The 245/35/18 tire size would require either M3 front lower control arms, or camber plates, in order to achieve negative camber in the front due to how close the wheel and tire is in relation to the fender. For the 255/35/18 tire size, both the camber plates and the M3 front lower control arms are required to achieve enough negative camber in front in order for the front tires to clear the fenders. With coilover setups utilizing a cone shaped progressive front spring (KW, ST, or PSS9) a 235/40/18 tire is the maximum front tire width because the spring takes up too much room on the strut side creating rubbing issues once a wider tire is used.

[toro_cba]

nice explanation, and what about 19`s?

[850tgul]

Can confirm hankook v12 ventus 235/40 fit arc8 18x8.5 et45 up front on stock sports suspension. No rubbing.