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Discussion Starter · #1 ·
is there a hard & fast way of measuring wheels for replacement tyres. all my cars are scalextric and there is a huge variety of sizes. some fitments appear to be near identical but aren't. width is obviously going to be pretty straightforward but is the diameter measured at the widest point of the central locating rib or at the outer edge of the rim itself? (assuming they aren't tapered like some seem to be)
 

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I was also wondering about this, as I am looking into some urethane tyres, but the scalextric
tyres all seem different sizes.

Can someone let us know the best way to measure the tyre please, do you do it from the hub centre
outwards too the far edge, or too the rim edge?

Some help would be greatly appreciated

Thankyou peeps
 

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Generally wheels are measured at the extremity, the centre of the ridge. Then you need the width of the wheel and the width of the centre rib. If you search the forum you will find endless posts on this topic.

Most "European" marques designed for racing have "standard" wheel sizes and so 19x10 tires from Ninco /SCX etc will fit Fly, Avant Slot, etc. I have some SCX 20x12 tires on Ninco hubs, as an example. Or Ninco Porsche front tires on the rear of a Sloter Lola.

Scalextric and Carrera are different and sometimes each car has it's own wheel/tire size. I think? Scalextric LMP cars will accept "standard" slot.it type tires. 19x10, 20x12 etc. Most soft rubber tires will stretch over hubs so 19x10 will fit both 16mm and 17mm rims etc. as will 20x12. If the hub is narrow like 8.5 rather than 10 the tires will still fit but there will be more tire sticking out past the edge of the hub.

The width of the centre ridge is usually the killer. "standard" is +/- 5mm some scalextric wheels are 4mm so "standard" tires will likely be loose. 4.5mm you will get away with. I gave up looking for small thin O-rings to space out the tires.

Overdrive Slot shop has a tire fitment pop up/page but not all cars are on it, but you will get the idea. Supertires does or used to have a diagram showing the dimensions of their tires.

You need to do some research and look at many websites but it is all out there, just takes time surfing.
 

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Gary Skipp
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QUOTE (Abarth Mike @ 28 Feb 2013, 14:42) <{POST_SNAPBACK}>Scalextric and Carrera are different and sometimes each car has it's own wheel/tire size. I think?

From memory, although this comment may be out of date, Scalextric used to boast a unique wheel to every single model they made. So if it's still true, you would be entirely correct!

petestrike - If you can't source a direct replacement easily, try talking to your local retailer for advice. If you already use specialists like Pendle, they'll be happy to help find something that fits.

If you wanted to change the tyres for performance reasons, you may have a difficult time getting a racing tyre such as Slot.it or NSR to fit the standard Scalextric wheel. But, there are many independent tyre makers such as Ortmann and various silicone and urethane suppliers that sell like-for-like swaps. These are all cottage industry companies that produce made-to-fit tyres for particular model wheels.

btw, nothing should be tapered

- I think you could be experiencing out-of-true wheels. Quite common on mass-mfr plastic wheels, easy to fix, separate discussion entirely!
 

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Rich Dumas
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If you are considering using urethane tires Slot Car Corner has both a fitment chart and an online guide with pop-up choices for the Supertires Yellow Dog line of tires. Look for the Super Tires Selector link, it is much easier to use than rooting through a chart.
 
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