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      09-23-2020, 06:48 PM   #1
mocad
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Mixing Tires w/ Different Load Ratings

I'm trying to figure out an all season tire setup on my 741M wheels. Does anyone know if there is any impact to the vehicle to mix load ratings between front and rear? I assume this makes no difference to the car and it's just up to the driver to not exceed tire load rating.

The exact tires I'm looking at are Pirelli Scorpion Verde All Season:

Fronts: 275/40 R21 107V
Rears: 315/35 R21 111V

Edit: I wrote this about speed rating, but it is the load rating that is different between the tires I am looking at.
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Last edited by mocad; 09-24-2020 at 07:43 AM.. Reason: typo
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      09-24-2020, 10:47 AM   #2
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The oem tires also have different load ratings, so it shouldn't be a problem

https://www.wheel-size.com/size/bmw/x5/2020/

and it seems it is the same as oem

275/40ZR21 107Y
315/35ZR21 111Y
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      09-24-2020, 06:23 PM   #3
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Quote:
Originally Posted by bhe View Post
The oem tires also have different load ratings, so it shouldn't be a problem

https://www.wheel-size.com/size/bmw/x5/2020/

and it seems it is the same as oem

275/40ZR21 107Y
315/35ZR21 111Y
You're right that online it shows the difference. On the Conti factory tires, the load rating is just indicated as "XL" on both front and rear. It doesn't show the actual number.

My BMW center wasn't able to find any all seasons available to order and I called Tire Rack and they told me the same. But, when I do a manual search by individual sizes, I can find a couple of combos with these numbers. None are run-flat so maybe this was why they were not finding them, even though I mentioned I had the spare. Not sure.
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