Running staggered tyres on same-size wheels shouldn't have contributed at all to the blow-outs
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- I'd guess that's usually down to sidewall damage, punctures or insanely high pressures
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(probably 50psi+!).
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Or maybe if the tyres hadn't sealed on the bead correctly.
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.
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? Not sure if that's a thing to be honest.
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What tyres are you going to be using? Ideally you want to use the same brand/model front and rear, and steer away from budget ditch finders.
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245/45/17 on the rear shouldn't cause you any issues.
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I prefer taller sidewalls to be honest
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- gives you the mean drag racing stance
![Twisted Evil :twisted:](./images/smilies/icon_twisted.gif)
Your only downside will be that the speedo will be out of whack because of the larger rolling radius, and maybe some sidewall flex
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(but I doubt most drivers would even notice).
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It should be pretty comfortable and hopefully protect your wheels from our native potholes to some extent
![Laughing :lol:](./images/smilies/icon_lol.gif)
235/40/17 is probably going to suit better though
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(you could run these on the 9.5J wheels too with a slight stretch.
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It wouldn't be crazy)
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I'd go for the 8J wheels all round if choosing between those two wheel options
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- maybe run 20-25mm hubcentric spacers on the rear too if you want to fine tune the staggered fitment along with wider tyres.
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EDIT.
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I suppose blow-outs could be a result of imbalanced wheels or some suspension component wear too? Just a guess though.
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You'll probably struggle to fit 9.5J wheels without some rubbing or arch clearance issues
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- especially without stretched tyres.
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Depending on the offset they could actually foul the suspension strut.
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