Not sure mate if you go too bigger spacer you may have to get extended studs? tbh it would look alot better with a more flush fit and as for the bolts best thing to do is speak to the supplyer but most aftermarket wheels take a 60 degree taper, when your putting the wheels on you will know if the nuts are right or wrong! Do them up by hand dont buzz them on get a torque wrench i think the setting you want is 90nm if unsure take them to a garage it wil cost about £2 a corner
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