I would sujest loosing them.
I resently scraped off two tires becouse of punctures that could not be fixed becouse the runflat grease had enterd into the puncture hole. thus efectivly stopping the plugs from sticking. also lots of tire replacement shopes willnot work on tires fited with runflats (personal experiance). also If you require tire swap it can be very expensive. my local dealer in Columbus Ohio wanted $680.00 to put on tires that I already owned. for that money you can get a compresor two tire leavers from your local farm shop (big leavers not the type you'd use on a civic)1 4 ton farm jack, placed under rear bumper to break the bead. 1 can WD40, 1 can propaine(after you've strugeled trying to bead a 37x12.5/16.5 for two hours you'll figer what it's for. dont use too much) but it works in a flash(and quite a bang.
by the time i got round to doing the forth tire I was down to 40 minutes from removal to replacement. now the runflats are off I t'm pritty sure I can do it a lot quicker than that.
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