Std Euro Tyres

[alexander_the]

Hi all,

Does anyone know, what is the maximum tyre width the 6.5jj rim can handle?
It is the tyre chnage time, so I was thinking to fix my Std Euro with wider tyres
Thanks

[Tobster]

See what the shop recommends, but I wouldn't go past 225; I'd probably just bump it up to 215.

If you go too fat, you'll just get really sloppy-feeling steering.

Contrary to popular opinion, wider tyres won't necessarily offer more grip -- and they will make you more prone to aquaplaning; the other option is to fit a better tyre in place of the standard 205 55 R16.

[alexander_the]

Thanks for that, I was actually thinking about 215, no more then that

Regards

[Merlin086]

Check out this site for a table of rim and tyre sizes.....

http://www.pneus-online.co.uk/equivalency-tables-advice.html

[alexander_the]

Check out this site for a table of rim and tyre sizes.....

http://www.pneus-online.co.uk/equivalency-tables-advice.html

Thanks for the reference. That's answers all my questions!

[Merlin086]

I was hoping to put 235's on my 06 euro lux but Honda already put on the max legal of 225's.

Bummer.....235's look so much fatter than 225's.....

[tony1234]

I was hoping to put 235's on my 06 euro lux but Honda already put on the max legal of 225's.

Bummer.....235's look so much fatter than 225's.....
And cheaper too!

[tony1234]

See what the shop recommends, but I wouldn't go past 225; I'd probably just bump it up to 215.

If you go too fat, you'll just get really sloppy-feeling steering.

Contrary to popular opinion, wider tyres won't necessarily offer more grip -- and they will make you more prone to aquaplaning; the other option is to fit a better tyre in place of the standard 205 55 R16.
Yeah,i agree go 215/50 i think it'll be but more importantly get a better tyre.There is a LOT of difference between a good tyre and a cheaper one.

[EuroAccord13]

225 is the maximum you can go...

I'm running 225 on 6.5 right now...

[sendok]

I will go with 215 or 225 max.. :D

[aaronng]

That's right. The max width for 16x6.5 is 225/50 R16. And it also depends on the profile of the tyre. The lower the profile, the wider the rim you have to get. So 225/35 R16 would need rim wider than 6.5"

[Merlin086]

That's right. The max width for 16x6.5 is 225/50 R16. And it also depends on the profile of the tyre. The lower the profile, the wider the rim you have to get. So 225/35 R16 would need rim wider than 6.5"

So according to that are you saying that a 235/45 will go on a 7" rim legally?

[aaronng]

So according to that are you saying that a 235/45 will go on a 7" rim legally?

It's not about being legal. It's about the air in your tyres not popping out past the bead in case of you going over a sharp bump at high speed.

For 235/45 R16, you need at least 8" rims!
Use the rim width calculator here. http://www.carbibles.com/tyre_bible.html
It takes into account the tyre profile in the calculation.

[Merlin086]

It's not about being legal. It's about the air in your tyres not popping out past the bead in case of you going over a sharp bump at high speed.

For 235/45 R16, you need at least 8" rims!
Use the rim width calculator here. http://www.carbibles.com/tyre_bible.html
It takes into account the tyre profile in the calculation.

So according to your calculator Honda should be using a minimum of 7.5" rim width on the lux with 225/45 R17, not the 7" rim that they are using? (i'm talking 17" rims here, not 16")

[Merlin086]

Interesting also that the 215/50 R17's that go on the tsx only require a minimum 6" rim according to carbibles...........
So by Honda increasing the tyre width by 10mm to 225 and reducing from 50 to 45 profile, this then requires a increase in minimum rim width of 1.5" or 38mm according to http://www.carbibles.com/tyre_bible.html

Seems a bit suss that a 10mm increase in tyre width requires a 38mm increase in rim width?

[aaronng]

Interesting also that the 215/50 R17's that go on the tsx only require a minimum 6" rim according to carbibles...........
So by Honda increasing the tyre width by 10mm to 225 and reducing from 50 to 45 profile, this then requires a increase in minimum rim width of 1.5" or 38mm according to http://www.carbibles.com/tyre_bible.html

Seems a bit suss that a 10mm increase in tyre width requires a 38mm increase in rim width?

Yeah, it's suss that Honda Australia uses 225/45 tyres on 7" while Acura does it properly and puts on 215/50 instead.

That's right, because the 225/45's sidewall height is slightly lower than 215/50 (107mm vs 101mm)

[Tobster]

Japan and Europe also use 225 -- not just Australia.

Besides the US, the Euro R runs 215 45 R17s.

There are other rim/tyre calculators or guides (some tyre manufacturers' websites specify rim size guides with tyres) that suggest slightly different figures.

[Merlin086]

Spot on Tobster..........
Personally I would check with the tyre manufacturer regarding minimum rim width as there is too much discrepancy between rim/tyre calculators or guides, if the limits are being pushed.

I could not imagine that Honda and Bridgestone would match a tyre to a rim on the limit regarding width, as a underinflated tyre could be catastrophic.

Nitro is my choice of inflation.........zero pressure loss in 3 months....and no variation due to heat.
5 yrs running nitro.

[tony1234]

Spot on Tobster..........
Personally I would check with the tyre manufacturer regarding minimum rim width as there is too much discrepancy between rim/tyre calculators or guides, if the limits are being pushed.

I could not imagine that Honda and Bridgestone would match a tyre to a rim on the limit regarding width, as a underinflated tyre could be catastrophic.

Nitro is my choice of inflation.........zero pressure loss in 3 months....and no variation due to heat.
5 yrs running nitro.
I've got nitrogen as well,only need to check tyre pressure every 2-3 mths.Got it from Bob Jane cost $20.00 and get free top ups.:thumbsup:

[blueeuro]

I'm a bit confused about what will and wont fit. There's a charity auction coming up at work soon and I might be able to get a set of 5 Bridgestone Turanza 225-50-R17.

I have a 2006 Lux Auto with OEM wheels.

1. Will these tyres fit my car ?

2. Are they any good ?

Thanks

Paul

[aaronng]

I'm a bit confused about what will and wont fit. There's a charity auction coming up at work soon and I might be able to get a set of 5 Bridgestone Turanza 225-50-R17.

I have a 2006 Lux Auto with OEM wheels.

1. Will these tyres fit my car ?

2. Are they any good ?

Thanks

Paul
They will fit, but you'll end up with a larger rolling diameter and your speedometer will end up underreading.

[aday]

I'm a bit confused about what will and wont fit. There's a charity auction coming up at work soon and I might be able to get a set of 5 Bridgestone Turanza 225-50-R17.

I have a 2006 Lux Auto with OEM wheels.

1. Will these tyres fit my car ?

I'm almost positive that, in SA, fitment of these tyres will be illegal.

The stock size is 225/45 R17. With 225/50s, you've got a rolling diameter difference of 3.41% or 22.36mm. From memory, the maximum allowed variance is 15mm or 3%, but I can't seem to find my copy of the SA regs, so someone feel free to correct me. It might be worth a quick call to a tyre retailer to confirm.

[blueeuro]

I'm almost positive that, in SA, fitment of these tyres will be illegal.

The stock size is 225/45 R17. With 225/50s, you've got a rolling diameter difference of 3.41% or 22.36mm. From memory, the maximum allowed variance is 15mm or 3%, but I can't seem to find my copy of the SA regs, so someone feel free to correct me. It might be worth a quick call to a tyre retailer to confirm.

If your calculation of the 22.36mm increase is correct then you are also correct about them being illegal. According to the RAA website ---

"Next, the overall diameter of this new alloy wheel and tyre package fitted must not exceed 15 mm. This is achieved by fitting a low profile tyre on the oversize rim."

Thanks heaps for the info, so while they will fit, they will also be illegal, I've now suddenly lost interst in the auction.

Cheers

Paul

[^__^ SM ^__^]

They will fit, but you'll end up with a larger rolling diameter and your speedometer will end up underreading.

I was on the highway the other day going past those speed check points. I had the speedo on 100km/h and it only showed 95km/h. So does this mean i can get bigger rolling diamter tyres and still be ok? that's about 5% variance there.

[aday]

I was on the highway the other day going past those speed check points. I had the speedo on 100km/h and it only showed 95km/h. So does this mean i can get bigger rolling diamter tyres and still be ok? that's about 5% variance there.

Just because your speedo under-reads (according to an imperfect test) doesn't mean you can fit tyres that don't meet the legal requirements for your car. Even if a side-effect of said tyres is to make your speedo reading more accurate. Your car will still be technically defectable.

[yfin]

Every reputable tyre shop will have behind the counter a book that shows the legal tyre sizes for every make and model vehicle. It includes the Euro as I have seen the entry. If in doubt speak to a tyre shop.

As for what tyres can fit on what rims - it is best to look at the tyre manufacturer's web site once you have decided what you brand you want. They typically have a chart showing maximum, optimum and minimum rim width for a tyre. eg:

http://www.michelin.com.au/tyres/passengerCar_pilotSport.asp