18-inch Michelin tyres on a Ferrari F138

Should F1 switch to larger wheel rims?

Debates and PollsPosted on | Author Keith Collantine

18-inch Michelin tyres on a Ferrari F138Recent rumours linking Michelin to a return as a tyre supplier in Formula One centred on their desire to see an archaic aspect of the F1 rules brought up-to-date.

Formula One wheel sizes have been fixed at 13 inches (330mm) for two decades even as the side of road car rims and racing cars in less restrictive series have increased. Pirelli are expected to remain F1’s single tyre supplier next year and 13-inch wheels will remain.

Michelin were believed to want to see F1 wheel sizes grow to 18 inches (457mm) – a significant increase. Is it time for F1 to catch up with developments in the world of wheels?


On a purely philosophical level, if Formula One is supposed to be the pinnacle of motor racing, an update to this area of the rules is long overdue. Formula One’s 13-inch wheels look oddly small compared to the larger wheels used in the World Endurance Championship and forthcoming Formula E series.

One might assume that where an F1 car is different from a road car it is because of reasons of performance. But in this case Formula One is well behind the times – modern road cars tend to have far smaller tyre aspect ratios than F1 machines.


Stagnant areas of development in Formula One usually have two root causes: safety or costs, sometimes both. In this case it’s largely the latter. Limiting tyre development is a significant cost saving for teams.

To change the size of wheel rims now would force teams to redesign their suspension, which would also bring significant costs. And the new tyres would require further track testing – yet more costs. All this at a time when teams are already feeling the squeeze from expensive new engine regulations.

I say

18-inch Michelin tyres on a generic F1 carIt does seem strange to have the world’s fastest racing cars running on dinky wheels of dimensions so small it’s getting increasingly difficult to buy an equivalent for a road car. F1 does not use these smaller wheels for performance reasons, it’s purely a throwback in the regulations.

Given the choice there are many things I would like to change about F1’s current tyre rules. Given a red pen and a copy of the FIA Sporting Regulations I’d quickly strike out the obligation for drivers to use both tyre compounds during a race, and abolish the requirement for the top ten qualifiers to start the race on their used tyres from Saturday.

Of the many aesthetically displeasing characteristics of modern Formula One cars the bulging sidewalls so at odds with modern car design is not the most offensive. But it is another reminder of how F1 is falling further away from the cutting edge.

And I do rather like these illustrations of how F1 cars might look on (Michelin) 18-inch wheel rims.

You say

Do you think F1 should increase the size of its wheel rims? Cast your vote below and have your say in the comments.

Should F1 increase wheel rim sizes to more than 13 inches?

  • Yes - to 19 inches or more (12%)
  • Yes - as high as 18 inches (53%)
  • No - keep it at 13 inches (23%)
  • No opinion (12%)

Total Voters: 461

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Images courtesy of Jeremy Hancox

119 comments on “Should F1 switch to larger wheel rims?”

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  1. No. Wheels should remain the same size. Smaller wheels are lighter, they have less rotating mass, and less gyroscopic force to overcome.

  2. I design wheels in light alloy wheel company, so here are facts I can give:

    F1 wheels are light as a feather compared to 18″ wheels not only because of alloy but also because of size.

    Heavier wheels would decrease the speed of Pit Crews.

    If a heavier wheel gets loose and crashes into s/o or sthg, it would cause more damage than a lighter one does at the same speed and situation.

    Obviously bigger wheels are heavier. So they make the car heavier and hamper maneuverability.

    Weight increases fuel consumption.

    They need more power to get them start turning and more power to stop them.

    They require lower tyre walls to have a reasonable overall diameter causing more impact on wheel itself and suspensions from the track surface.

    F1 is about extreme performance, and we already see its relevant technologies on the road. Sure it gets longer to get to ordinary passenger cars, but we get there. While trying to make it look road relevant, people risk damaging the sport irreversibly and hampering forefront technology research. I understand and totally support the effort to make it greener but trying to over-tame F1 frustrates fans.

  3. Firmly against 18″ wheels. F1 cars are open cockpit, open wheel racing machines. If you want road relevance go to WEC or Touring Cars. F1 is the pinnacle of motor-SPORT. And the ladder to F1 begins with karting. I love the fact that the wheels of an F1 car resemble those of a kart, therefore tying all of the disciplines together.

  4. Elijah Hallandal
    26th February 2015, 19:03

    What’s the point to change wheel size purely because bigger wheels look nicer? Formula 1 cars are developed to go fast and win races, not car shows. Unless there is significant proof that the change would be beneficial then maybe, but if not then they are costing themselves money, but nothing in return. It doesn’t matter what the car looks like if it’s winning races. Although, with these V6 turbo engines it’s hard to say it doesn’t matter what they sound like because that noise…So, I say no to the bigger wheels.

  5. Pretty part of content. I simply stumbled upon your site and in accession capital to say that I get in fact loved account your
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