Different speed ratings

mayday813 · 03-18-2014, 05:32 PM

Do any of you run different speed rated tires on the front compared to the rear of your vehicle? My W rated OEM front tires still have 7/32nds on them while my rears have 1/32. These are on a sport model with the OEM Potenza staggered front and rear set up. I would like to mount Michelin Pilot Sports (Y rated) on the rear while retaining the OEM Potenzas on the front.
I know that Tirerack advises against this but I'm not a big fan of purchasing two more Pontenzas for the rear due their inherent noise and inflated price.
My thought process is since the Y rated tires have a higher speed rating than the W rated tires I should be OK. Any advice would be appreciated.

AdamRacer · 03-18-2014, 05:42 PM

As far as speed rating alone I dont see why that's a problem. You shouldn't normally getting up into that high of speed anyways lol. The only difference I see is traction and handling from front to rear which may feel weird since they could grip differently.

03-18-2014, 05:32 PM	#1 (permalink)
mayday813 Base Member Join Date: Dec 2010 Location: Iowa Posts: 143 Drives: 11 370Z spt tour 6mt Rep Power: 14	Different speed ratings Do any of you run different speed rated tires on the front compared to the rear of your vehicle? My W rated OEM front tires still have 7/32nds on them while my rears have 1/32. These are on a sport model with the OEM Potenza staggered front and rear set up. I would like to mount Michelin Pilot Sports (Y rated) on the rear while retaining the OEM Potenzas on the front. I know that Tirerack advises against this but I'm not a big fan of purchasing two more Pontenzas for the rear due their inherent noise and inflated price. My thought process is since the Y rated tires have a higher speed rating than the W rated tires I should be OK. Any advice would be appreciated.

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03-18-2014, 05:42 PM	#2 (permalink)
AdamRacer Enthusiast Member Join Date: Jan 2012 Location: North Florida Posts: 316 Drives: '12 MBlue 370z 6sp Rep Power: 13	As far as speed rating alone I dont see why that's a problem. You shouldn't normally getting up into that high of speed anyways lol. The only difference I see is traction and handling from front to rear which may feel weird since they could grip differently.