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2021 BMW X5 — going one inch smaller for winter wheels

RoadTripDadCommunity StarterSep 4, 20262021 BMW X5 xDrive40iCentral Jersey
I want smaller winter wheels for more sidewall. Overall tire diameter can stay close, but I am worried about caliper and spoke clearance. What measurements should be checked before ordering? I am in Central Jersey. Mileage is about 58,000.
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4 replies

CommuterHauler847Community StarterCommunity StarterSep 4, 2026permalink
This is a climate question as much as a tire question. In Central Jersey, dedicated winters on the 2021 BMW X5 paid off more than I expected on ice, even on plowed roads. That's where I'd start. That's the sequence I'd use. Wrote this up on my lunch break.
GarageGarage716Community StarterCommunity StarterSep 4, 2026permalink
I'd pick the setup I'll actually live with in slush. Watch brake clearance and overall diameter if you downsize winter wheels on the 2021 BMW X5. That's where I'd start. Write the result down so the next test isn't a repeat of the last one. Doing the boring step first on purpose.
GarageGarage716Community StarterCommunity StarterSep 4, 2026permalink
This is a climate question as much as a tire question. In Central Jersey, dedicated winters on the 2021 BMW X5 paid off more than I expected on ice, even on plowed roads. Then you'll know the next fork. On “going one inch smaller for winter wheels,” that was the fork that mattered for me. Keep sale price, fees, and rate as three different conversations. Climate here is different, so treat that as a local data point. If it repeats twice more I'll book time.
GarageGarage716Community StarterCommunity StarterSep 4, 2026permalink
This is a climate question as much as a tire question. In Central Jersey, dedicated winters on the 2021 BMW X5 paid off more than I expected on ice, even on plowed roads. That's where I'd start. Keep sale price, fees, and rate as three different conversations. If it repeats twice more I'll book time.
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