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I am looking for the largest LEGO wheels with tires available to build a nice-sized RC LEGO car.

Of course I will start with the simplest prototype, but I would like to achieve a design which will embed an automatic gear box and quite a large propulsion system. So the size of the wheels will be important.

Edit: The "Wheel 81.6x15" 2903 @Pubby8 found seem to be the biggest. But they are thin... Are there any other larger ones? Even 3rd party would be good.

Edit: @Joubarc & @Pubby8 found the biggest wheels but without tires I am still looking for 3rd party solutions before accepting an answer.

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up vote 9 down vote accepted

The largest wheels I know are these (I measured 110x63 mm, including tyres), but they are quite rare (only available in one single set):

Weels: 22969 "Wheel Technic Racing"
Tyres: 32298 "Tyre Power Puller"

The wheels itself are not that big, but if you include the tyres, they are really huge:

4x4 offroader

They would probably work really well for an RC car.

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The largest wheels are on the 8466 – user4149 Nov 8 '14 at 18:19

The largest wheels I've seen are "Wheel 81.6x15" 2903

enter image description here

To show scale:

enter image description here

There are larger ones on the Hailfire Droid but these probably aren't good for your needs:

enter image description here

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Peeron lists them as "Wheel 81.6x15" 2903 ( and "Tyre 81.6x15 Motorcycle" 2902 ( – Zhaph - Ben Duguid Oct 26 '11 at 22:33
Part 2903 is also more common, It exists in 23 sets, including the RCX series which was fairly popular at the time it was released. – Ambo100 Mar 23 '15 at 18:04

An alternative is the 94.8x44 balloon tires. While they are not as big as the ones elusive suggested, I imagine they are easier to get as they have been in some recent sets.

Comparison: Wheel size comparison

  • Left: 81.6x15
  • Middle: 94.8x44 balloon
  • Right: 81.6x38 balloon
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There is also the Technic Gear Mobile Devastator Wheel, but it's not really suited if you want a realistic car. If you want to build a funny-looking vehicle, however... You could even build a complete vehicle which fits completely inside the radius of two such wheels, so that it can turn on itself when you reverse the polarity. Again, not a car, but super funny.

59521 - Technic Gear Mobile Devastator Wheel

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I personally have the Lego Group 62.4 x 20 S tires which came with the Lego Creator 7291 2-in-1 Motorcycle kit.enter image description here

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While not as big as the ones in the accepted answer, these may be more available due to the larger number of sets they appeared in. – Zhaph - Ben Duguid Mar 23 '15 at 9:31

How about the old school tyres of the #8860 chassis:



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They are fairly large, but have sadly been surpassed by others. The 94.8x44 balloon (the middle one in Sebastian Wahl's answer) beats the 24x43 one in that set :( – Zhaph - Ben Duguid Nov 10 '13 at 22:18

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