Load Index for 18"+ tyres

[PNR888]

For those of you have 18"+ wheels, what is your load index of tyres?

OEM 16" tyre has load index of 91 or 615kg

I am struggling to find any 225/40/18 tyre with load index equal or exceed 91. Most of them are 88 or 560kg

http://www.ozhonda.com/forum/showthread.php?t=25771&highlight=load+index

Any one who has or knows a 225/40/18 tyre has load index equal or higher than 91 (615kg), please let me know..

BTW, what is the OEM17" tyre's load index? 90?

[Ferrarista]

where would you find out this information?

[baboo]

Roger,

with 18inch, you should be looking at 235/40 R18 as the rolling diameter is closest to the stock 205/55 R16

OEM 17" tyres has load rating if 91 aswell

[Tobster]

Actually the load index of the tyres on the stock 17s is 94 -- the RE040s are available in a variety of speed and load indexes, but the car comes with 94 W rated tyres.

Same as you can be defected for plus fitments beyond a certain size of what came standard on the car, you can also be defected for not running the same load index -- if anyone wants to be picky about it...

[TypeLess]

Roger,

with 18inch, you should be looking at 235/40 R18 as the rolling diameter is closest to the stock 205/55 R16

OEM 17" tyres has load rating if 91 aswell

You are correct about closest rolling diameter will be a better fitment but 235/40R18 is not the closest.

with OEM size either 225/45R17 or 205/55R16 depending which model of euro u got.

225/45R17 has an overall diameter of 634mm, with load index/speed rating - 91W
205/55R16 has an overall diameter of 632mm, with load index/speed rating - 91W

so if you want to change to 18" rims the best fitment will be 225/40R18, that has a overall diameter of 637mm and closest to the oem sizes. For 235/40R18 its overall diameter is 645mm so it is about 11 or 13mm larger than OEM.
You can fit both sizes on, they all go within the legal requirement of +/-15mm.

And PNR888 if you are looking for 225/40R18 or 235/40R18 with a 91W or greater, i recommend you to look at the Hankook K104 and K107 in those sizes. Both of those 2 models offer load index/speed rating of 92Y XL and 'XL' stands for extra load. you can find the pattern image from www.hankooktyre.com.au. (http://www.hankooktyre.com.au)

[aaronng]

The new Yokohama A.drive R1's come in 225/40 R18 with a 92 load index. So you should be ok with that.

[albii]

Roger my load index is 92 and i have 225/40/18

[tknova]

Tyres in an 18 that will cover your load rating in a 18 or 19 inch wheel that i know of are:

Hankook k104
Falken st-115

The k104 will be cheaper than the st-115
I'm running the st-115 on a 235/35/19 on the euro with a 615kg rating, unreal tire.. But very soft compound and wears quickly

I ran hankook k104 on my old wrx (225/35/18) and that's a 615kg (on a 18 inch wheel) and they lasted 30,000kms & still a very damn good tire! Probaly equal or better than the falken!

[baboo]

Oh yeah sorry my bad,

had used 225/55/R16 as a base

anyway, heres the calculator if anyone's interested

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

[yfin]

Go Dunlop 3000As - great value.

235/40R18 95W SP3000A DUN

[PNR888]

Thank you tobster, baboo, Albii, arronng, tknova, and yfin for your replies. Big thanks also goes to TypeLess for the thorough explanation and Hancock link.

Ferrarista, the load index reading can be found on sidewall of your tyre..

[EuroAccord13]

Toyo have tyres of that size that has the required load rating... Check them out...

They are from the Touring range..

P.S ... Moving to Technical Section for more opinions as this is not just an Accord related Q. :)