I'd honestly plea that you get some decent JDM wheels.
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There are not enough MK1s going around with good JDM wheels on.
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If you did want to stay 15, then you will be able to get wide enough wheels, it's not hard to get 15s in 9" wide for example.
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As for going staggered, personal choice and how you like the car to feel.
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I would say look for some secondhand wheels from the likes of Work or Rays and get them refurbed.
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Also lightness of the wheel is absolutely key.
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Makes a big difference having lighter wheels.
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I'm not exactly sure what rubber is available in that kind of size.
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I will have to look for my AE86 next year in terms of rubber.
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My favoured choices would be Yoko Advans or Contisport Contacts, but I'll bet they're not available in the size I want.
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