No matter what kind of TPM (sensors on rim or by ABS sensors) you have, if you want to use RFT, you'd better have one kind of TPM equipped on your car. Otherwise, it will be very dangerous when you have flat tyre because you will not easily notice it. If you use the same type of tyres on front axle, it should not feel steering pulling on one side.

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--2004 E53 X5 4.8is - ECE version; right hand drive; Located in Hong Kong; ext. black sapphire metallic; int. leather black; adaptive dynamic bi-xenon headlights; 16:9 onboard monitor w/o navigation; 20" genuine BMW Y-spoke 214 wheels with Bridgestone Dueler H/P Sport tires; Int. rear view mirror w/ compass.