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Old 24th March 2012, 08:36   #1
aliusa
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Plus size tires on e39 M5

This question might have been discussed in the past but I cannot find it. Would like to know what's the biggest plus size tire can go on the OEM e39 M5 wheels - front and back without impacting the handling? Stock sizes are 245 front and 275 rear.

If anyone has any pics of bigger tires on OEM wheels please post.

Thanks!
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Old 24th March 2012, 14:50   #2
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Most folks put a set of rear wheels up front with a 3mm spacers and 275 tires.

I run 4 ssr 18x10s with 285/35s I don't think i could get any wider - I rub a tad on the fender and have about a 2mm gap between the strut and tire.

EDIT: I'm on ground control coilovers - the fronts have have a dimple that allows about 3mm more inner-wheel clearance.

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Old 24th March 2012, 18:14   #3
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I ran Falken 285s on the OEM rear wheels with no issues (fronts were stock size) on Dinan suspension:






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Old 24th March 2012, 19:28   #4
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I have 18x9 with 275s up front, 18x9.5 with 285s in the back with Koni suspension.
Does anyone know the offsets of the DINAN rims?
I've had 4 person in the car and never experienced any rubbing....





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Old 24th March 2012, 20:19   #5
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the rear 9.5s look to be in the ET18-22 range.

my rear rubbing is mostly due to the fender rolling - i need to be more aggressive. The M5 has rolled-flat rear lips from the factory.
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Old 24th March 2012, 21:29   #6
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I ran 285/25/20 in the rear some time ago

If you want to go wider without cutting anything 295/25/19 might fit with a proper offset
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Old 25th March 2012, 03:21   #7
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Yes I'm talking about plus size tires on the OEM wheels.

Inverno - what profile size did you use with 285 tires? Factory size for rear is 275/35/18. Did you use 285/35 or 285/30?

[quote=Inverno;2282114]I ran Falken 285s on the OEM rear wheels with no issues (fronts were stock size) on Dinan suspension:
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Old 25th March 2012, 05:35   #8
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For autocross I had 255/35/18 Hoosier A6s on the stock fronts with no spacers. They were actually virtually identical in width to my 275/35/18 A6s I ran in the back... I heard 255/35/18 was a spec-size tire for a certain racing series, so Hoosier made them extra wide (I measured 11.2"). Stuck out pretty far on the stock 8" front wheel.

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Old 25th March 2012, 06:37   #9
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I had 295s in the rear on stock wheels and suspension. They barely fit and would rub on bumps if i had anyone else in the car.
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Old 25th March 2012, 09:16   #10
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Check that..285 35 zr18 on stock rear oem

Thank you
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