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Originally Posted by 1FastCasper
...purchased a 2004 4.4 (69,000 miles). The "new" e53 had 18" wheels on all corners. I swapped these for my staggered 20".
The problem I have is when passing on a mountain road, the yellow light on the dash lights up and acceleration is impossible until I lift the pedal.
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If your staggered tire set up is within spec (3% +/-) each other side to side...as well as axle to axle...then check the tread depth and air pressure to make sure that something really simple isn't causing the issue. Are your tires directional? If so, make sure that they are mounted on the correct side of the vehicle.
Also, you may want to check your wheel speed sensors...perhaps you bumped one while swapping the wheels...or they may have some crud/corrosion that needs to be cleaned up...or maybe a wire has chaffed or cracked.
My 06 4.4 came with the 18" Style 153 wheels...and I upgraded to a staggered set of 20" Style 87 wheels...and I had no issue at all since the tires are within the 3% spec of overall tire circumference/diameter (275/40/20 fr & 315/35/20 rr).
I go from 18" Style 153 Wheels (with 235/60/18 dedicated snow tires) for part of the year:
To 20" staggered Style 87 Wheels (275/40/20 & 315/35/20 tires) with no issues for the rest of the year: