Wider tyre on 16" alloys?

[egSi]

My 03 is due for new tyres and Id like to put some 225/50R16s on the stock alloys in replacement of the current 205/55R16s.

According to this calculator; http://www.miata.net/garage/tirecalc.html

The overall circumference difference of my new tyre/rim combo will be less than 2mm.

I was just wondering if anyone else has installed a wider tyre on their 16" alloys and how it went?

Any thoughts or suggestions?


Cheers
Trav

[Lukey]

will it bead to the tyre properly? im assuming it will, but you might need to run some strange tyre pressure sin it

[aaronng]

If they are the stock alloys, you can use 225/50 R16. That is the limit, don't go any wider.

[egSi]

Thanks guys. According to the Toyo website, 225/50R16s will be OK for rims 6 to 8 inches.

http://toyotires.com/tire/pattern/proxes-r1r

6.5" is not ideal but looks like Ill get away with it. What do you think?

Aaron? ;)

[tony1234]

Thanks guys. According to the Toyo website, 225/50R16s will be OK for rims 6 to 8 inches.

http://toyotires.com/tire/pattern/proxes-r1r

6.5" is not ideal but looks like Ill get away with it. What do you think?

Aaron? ;)
215/50R16 tyre would be ideal but i don't think it's available.

[aaronng]

Thanks guys. According to the Toyo website, 225/50R16s will be OK for rims 6 to 8 inches.

http://toyotires.com/tire/pattern/proxes-r1r

6.5" is not ideal but looks like Ill get away with it. What do you think?

Aaron? ;)

It says approved rim width range is 6.0-7.0-8.0. So 6.5 will be fine. :)

EuroAccord13 ran 225/50 R16 on his 16x6.5 for a long while and even went to Winton with it. No problems.

[FDBenni]

I think if you go too wide it actually makes handling worse .. making the rubber roll and flex.

[egSi]

Thanks for all of the input guys. Yeah Aaron I know its range but 6.5 is in the middle. I was pretty sure this would be sweet, I just wanted to know if anyone else had done it yet. :)

I am going to place an order for the 225/50s this week. I might post up what they are like fitted.

FDBenni, yeah in theory you are right. More sidewall = more flex. Flex can be different from tyre to tyre tho. Right now I have shitty Michelins that I think are straight off a wheel barrow. My plans are to buy UHP tyre that is slightly wider.

In fact the sidewall difference is also next to nothing.

a 205/55R16 sidewall = 112.8mm

a 225/50R16 = 112.5mm


So once all is said and done, I want to go from having a stock Euro with shitty tyres, to a stock Euro with slightly wider, nice tyres. ;)

Thanks again guys :thumbsup:

[curtis265]

in for pics. Might look phat

[egSi]

Yeah curtis, ill have to take some when they are on.
I hope it doesnt look odd. I guess as long as the tyres do their job, I cant complain right? lol ;)

[integral90]

While we're on this topic...

What is the widest profile you can fit onto the stock CL9 17"? I assume a 235/45R17 would go on comfortably but could you push it to a (I'm guessing) 245/40R17?? Tyre profiles are still another language to me...

[tony1234]

While we're on this topic...

What is the widest profile you can fit onto the stock CL9 17"? I assume a 235/45R17 would go on comfortably but could you push it to a (I'm guessing) 245/40R17?? Tyre profiles are still another language to me...
I wouldn't go bigger than 235/45R17.The good thing about this size is it's quite common on Fords and Commos so therefore cheaper than 225/4R17.

[aaronng]

While we're on this topic...

What is the widest profile you can fit onto the stock CL9 17"? I assume a 235/45R17 would go on comfortably but could you push it to a (I'm guessing) 245/40R17?? Tyre profiles are still another language to me...

CHeck to make sure you have clearance from the suspension when you turn and also check that when you are at full lock that the tyres are not rubbing anything.

[integral90]

I wouldn't go bigger than 235/45R17.The good thing about this size is it's quite common on Fords and Commos so therefore cheaper than 225/4R17.

Thanks a lot :)

Would there but much weight difference between a 225 and a 235? I'm always very careful with rotational mass on the car

[tony1234]

Thanks a lot :)

Would there but much weight difference between a 225 and a 235? I'm always very careful with rotational mass on the car
Don't think so but check the rolling diameter of the 235/45 and see if it is within the 15mm tolerance that is allowed so as to be still legal.I'd say it would be.

[egSi]

This calculator might help :)

http://www.miata.net/garage/tirecalc.html (http://www.miata.net/garage/tirecalc.html)