Alternate 20" tire size?

[sbash]

Just looking at alternate tires for my 20" wheel. For reference, I listed the 21" OEM tire specs as well.

It appears that even though the Continental is listed as a smaller size, it actually compares very closely. Any thoughts on running the Continental in one size smaller than the Pirellis?


Michelin Pilot Super Sport MAX. INFLATION PRESSURE TREAD DEPTH TIRE WEIGHT RIM WIDTH RANGE MEAS. RIM WIDTH SECT. WIDTH TREAD WIDTH OVERALL DIAM. REVS. PER MILE
285/35ZR21
105Y XL
BMW 300 AA A 2,039 lbs. 50 psi 10/32" 29 lbs. 9.5-11" 10" 11.4" 9.6" 28.9" 721
325/30ZR21
108Y XL
BMW 300 AA A 2,205 lbs. 50 psi 10/32" 33 lbs. 11-12" 11.5" 13" 11.3" 28.7" 725


Continental EXTREMECONTACT DWS 06
315/35ZR20 560 A A 2,337 lbs. 51 psi 10/32" 35 lbs. 10.5-12.5" 11" 12.6" 11.2" 28.7" 724
110Y XL
275/40ZR20
106Y XL
560 A A 2,094 lbs. 51 psi 10/32" 31 lbs. 9-10.5" 9.5" 10.9" 9.5" 28.7" 724

Pirelli PZero
285/40R20
104Y SL
BMW 220 AA A 1,984 lbs. 51 psi ?/32" 33 lbs. 0-0" 9.3"
325/35R20
108Y SL
BMW 220 AA A 2,205 lbs. 51 psi 10/32" 37 lbs. 11-13" 11.5" 13" 10.7" 29"

[Roundown]

Originally Posted by sbash

Just looking at alternate tires for my 20" wheel. For reference, I listed the 21" OEM tire specs as well.

It appears that even though the Continental is listed as a smaller size, it actually compares very closely. Any thoughts on running the Continental in one size smaller than the Pirellis?


Michelin Pilot Super Sport MAX. INFLATION PRESSURE TREAD DEPTH TIRE WEIGHT RIM WIDTH RANGE MEAS. RIM WIDTH SECT. WIDTH TREAD WIDTH OVERALL DIAM. REVS. PER MILE
285/35ZR21
105Y XL
BMW 300 AA A 2,039 lbs. 50 psi 10/32" 29 lbs. 9.5-11" 10" 11.4" 9.6" 28.9" 721
325/30ZR21
108Y XL
BMW 300 AA A 2,205 lbs. 50 psi 10/32" 33 lbs. 11-12" 11.5" 13" 11.3" 28.7" 725


Continental EXTREMECONTACT DWS 06
315/35ZR20 560 A A 2,337 lbs. 51 psi 10/32" 35 lbs. 10.5-12.5" 11" 12.6" 11.2" 28.7" 724
110Y XL
275/40ZR20
106Y XL
560 A A 2,094 lbs. 51 psi 10/32" 31 lbs. 9-10.5" 9.5" 10.9" 9.5" 28.7" 724

Pirelli PZero
285/40R20
104Y SL
BMW 220 AA A 1,984 lbs. 51 psi ?/32" 33 lbs. 0-0" 9.3"
325/35R20
108Y SL
BMW 220 AA A 2,205 lbs. 51 psi 10/32" 37 lbs. 11-13" 11.5" 13" 10.7" 29"

I just picked up a set of the Contis - they're v similar in size and will run just fine on the OE 20" wheels (they're the standard non-M 5.0i size).

[JNoSol]

Contis DWS 275/40/20 front and 315/35/20 rear work just fine on OEM tires.

[AlexLou1222]

Go +10mm or -10mm is always safe and prob barely little difference in ride and handling.

[sbash]

Thanks guys!