View Full Version : Tyre load & speed ratings
Ralliart-AKKO
11-12-2007, 08:51 PM
I'm hoping there is someone out there a little more knowledgeable than I on the subject of tire load & speed ratings.
Basically a 94 load-rating is impossible for me to find in a tire to suit my rims, so what i want to know is if a 245/35ZR19 XL - 93Y will pass?
P.S. > it's been a while since I've posted, so hi to all those WA members who remember me :)
andrewd
11-12-2007, 09:23 PM
yeah a 93 load rating is fine (magnas are over rated) lol
fine that is untill you make an insurance claim have a crash etc... then you up the creek
i had 20's in the correct legal width od and 95 load rating
you should be able to find a tyre in that size with a higher rating, but it would be a cheap chinese tyre...
http://www.austyre.com.au/html/austyre-sport.html
there you go the size you want and 98 load rating!!!
i had these in 20" and they are better than the wanli 20" tyres i previously had and also cheaper
M4DDOG
11-12-2007, 09:27 PM
93 is fine, heck i'm running 87 on those size tyres and they're fine. Magna's are overrated. But know that the tyre isn't legal.
Gerard
11-12-2007, 09:32 PM
load rating of 87... thats too cautious man, who cares if you break really hard or take a corner to avoid a kid crossing the street and the tyre cannot handle the weight and fails on you.
i love how many people will follow the cars built specifications for things like oil/fuel etc for performance reasons. but safety.. meh.
Ralliart-AKKO
11-12-2007, 09:40 PM
you should be able to find a tyre in that size with a higher rating, but it would be a cheap chinese tyre...
http://www.austyre.com.au/html/austyre-sport.html
there you go the size you want and 98 load rating!!!
I'll need 255 or 265s for the rears in future, doesn't seem they have a match for that though, hmm
I'm hoping there is someone out there a little more knowledgeable than I on the subject of tire load & speed ratings.
Basically a 94 load-rating is impossible for me to find in a tire to suit my rims, so what i want to know is if a 245/35ZR19 XL - 93Y will pass?
P.S. > it's been a while since I've posted, so hi to all those WA members who remember me :)
Yokohama - ADVAN Sport V103
Disciple
12-12-2007, 05:29 AM
Why the hell do you need 265's on a Magna?? And on the rear of a Magna?? If you can't find legal tyres then it's time to find new rims or re-think plans. Load ratings are there for a reason, they aren't a guideline, they're the law. :nuts:
M4DDOG
12-12-2007, 05:59 AM
load rating of 87... thats too cautious man, who cares if you break really hard or take a corner to avoid a kid crossing the street and the tyre cannot handle the weight and fails on you.
i love how many people will follow the cars built specifications for things like oil/fuel etc for performance reasons. but safety.. meh.
Yes 87 is probably abit too low, anything over 90 i believe should be fine. I drove from melbourne to queensland, full car (rear was dumped on it's ass), had to break suddenly a couple of times and the tyres held up fine. The magna's load rating is very overrated, i do plan on getting new tyres soon when $$ permits, i think the ones i'm looking at were 93, which should be ok.
Sports
12-12-2007, 08:38 AM
Yes 87 is probably abit too low, anything over 90 i believe should be fine. I drove from melbourne to queensland, full car (rear was dumped on it's ass), had to break suddenly a couple of times and the tyres held up fine. The magna's load rating is very overrated, i do plan on getting new tyres soon when $$ permits, i think the ones i'm looking at were 93, which should be ok.
It wont be fine they need a 94 load raiting or you arnt covered in a crash and your car can get put off the road by the cops and trasport dudes because it doesnt reach the minimum standards for your car and you loose points and money due to defects. They can even tow your car.
M4DDOG
12-12-2007, 11:59 AM
It wont be fine they need a 94 load raiting or you arnt covered in a crash and your car can get put off the road by the cops and trasport dudes because it doesnt reach the minimum standards for your car and you loose points and money due to defects. They can even tow your car.
Only if you can proove the tyres weren't the cause of the claim. And there are ways around the police :P.
I won't say any more, i take the risk, and i accept that. Like i said i plan to fix it in the near future.
Gas_Hed
12-12-2007, 12:49 PM
Well I towed well over the recommended towing capacity on my KE (I towed a TS wagon + beefcake car trailer) and it towed it more than fine on 19" 91 rated tyres.
crackajnr
12-12-2007, 03:32 PM
Sure the tyres can handle the load but they are not legal unless they match the load rating for the vehicle.Insurance companies will use little things like that to get out of paying trust me.
Ralliart-AKKO
13-12-2007, 07:28 AM
Why the hell do you need 265's on a Magna?? And on the rear of a Magna?? If you can't find legal tyres then it's time to find new rims or re-think plans. Load ratings are there for a reason, they aren't a guideline, they're the law. :nuts:
Why do people do any mods to their cars (especially magnas)?
Thanks for the helpful post :nuts:
Fronts are 19*8.5
Rears are 19*9.5
Basically a 94 load-rating is impossible for me to find in a tire to suit my rims, so what i want to know is if a 245/35ZR19 XL - 93Y will pass?
Short, simple answer is no, they will not pass.
Tyre placard fitted to your vehicle gives you all the info about rim and tyre size, load and speed rating and cold tyre inflation pressure.
In your case rim size is 17x7.0 and tyre is 225/50ZR17 94W.
Also written on the placard is: Quote " The tyres fitted to this vehicle shall have a maximum load rating not less than 670 KG, or a load index of 94 and a speed category not less than W."
In your profile we can see that your front rims are 8.5" and rears are 9.5" wide.
From Vehicle Standards Information what I understand for front wheel drive car, front rim widths shall be no more than 26 mm greater than the widest optional rim offered by the vehicle manufacturer.
Allowable rim width increase for rear rims is 51 mm above the widest optional rim available.
http://www.rta.nsw.gov.au/registration/downloads/vsi/vsi09_rev4.pdf
Link is for NSW. Could not find one for WA. If WA have different standards, disregard this one.
So you will have to have your rims certified (engineered), but you already know that.
Will you get the certificate, because they exceed limits, I don't know.
Also you need to inform your insurance company about any modification or accessories fitted to your car and they have agreed in writing to cover them.
When they agree to insure you, to renew or vary your policy, or to pay your claim , their decision relies on the accuracy of the information you give to them. If that information is not accurate they can reduce or deny any claim you may make or cancel your policy.
Apparently it is legal in WA to fit tyres with lower speed rating than recommended by car manufacturer.
http://rac.com.au/go/motoring/about-my-car/looking-after-my-car/car-tyres
Also some more useful information about tyres
http://www.michelin.co.uk/uk/ImageServlet?imageCode=8910635705&codeSite=AUTO_UK
wookiee
13-12-2007, 08:11 AM
From Vehicle Standards Information what I understand for front wheel drive car, front rim widths shall be no more than 26 mm greater than the widest optional rim offered by the vehicle manufacturer.
also worth noting...
from the ADRs you are not allowed to increase the track (distance between the centre of the rims) on the front AT ALL on a fwd using Macpherson struts. all other cars have a 25mm track increase limit.
however, this can be certified by an engineer. you might find an engineer will sign off on a lower load rating too.
cheers,
.wook
also worth noting...
from the ADRs you are not allowed to increase the track (distance between the centre of the rims) on the front AT ALL on a fwd using Macpherson struts. all other cars have a 25mm track increase limit.
however, this can be certified by an engineer. you might find an engineer will sign off on a lower load rating too.
cheers,
.wook
That is correct. I was referring to rim width. You can increase rim width without affecting the track.
andrewd
13-12-2007, 08:51 AM
:bowrofl: :bowrofl: :bowrofl: :bowrofl: :bowrofl:
AHHHHHH HAHAHAHAHAHAHAH hHAHHAHAHAHAHAH HAHHAHHAHAAHAHHAH
what car do you have there buddy?
FWD?
why the fatties on the back?
got 300rwkw?
i think you will find if you had the same width tyre all around it'd drive much better and you wouldnt get ppl like me pulling up next to you at the lights pointing and laughing
wookiee
13-12-2007, 08:58 AM
That is correct. I was referring to rim width. You can increase rim width without affecting the track.
agreed, but you (probably) can't increase rim width to 8.5" and have no clearance issues without increasing track.
cheers,
.wook
Agreed, I doubt even 8" wide rim with +46 offset would fit because of clearance issue.
andrewd
13-12-2007, 09:19 AM
Agreed, I doubt even 8" wide rim with +46 offset would fit because of clearance issue.
nope
an 8.5" wide rim with +45 offset fits just fine...
it still incerases track width too though
wookiee
13-12-2007, 10:38 AM
nope
an 8.5" wide rim with +45 offset fits just fine...
it still incerases track width too though
just for reference, my 8"s are +38 offset and increased the track by about 25mm.
they needed to be certified.
check http://www.wheelsmaster.com/rt_specs.jsp out for sizing.
cheers,
.wook
Ralliart-AKKO
13-12-2007, 09:26 PM
:bowrofl: :bowrofl: :bowrofl: :bowrofl: :bowrofl:
AHHHHHH HAHAHAHAHAHAHAH hHAHHAHAHAHAHAH HAHHAHHAHAAHAHHAH
what car do you have there buddy?
FWD?
why the fatties on the back?
got 300rwkw?
i think you will find if you had the same width tyre all around it'd drive much better and you wouldnt get ppl like me pulling up next to you at the lights pointing and laughing
I'm not the first and won't be the last to do this, see 'Cummins (http://www.aussiemagna.com/forums/member.php?u=2162)' profile.
Purely cosmetic purposes.
Ralliart-AKKO
13-12-2007, 09:41 PM
So assuming I get an engineers cert for anything that doesn't currently conform to the guidelines outlined here: http://www.dpi.wa.gov.au/licensing/1884.asp
The load / speed rating should be a non-issue according to the RAC WA website: http://rac.com.au/go/motoring/about-my-car/looking-after-my-car/car-tyres
Thanks to those who posted useful information, much appreciated!
matt86
13-12-2007, 10:59 PM
So assuming I get an engineers cert for anything that doesn't currently conform to the guidelines outlined here: http://www.dpi.wa.gov.au/licensing/1884.asp
The load / speed rating should be a non-issue according to the RAC WA website: http://rac.com.au/go/motoring/about-my-car/looking-after-my-car/car-tyres
Thanks to those who posted useful information, much appreciated!
I went over this with the place i bought my wheels. The company gave me tyres with a load rating of 93 (this is before i knew anything about load ratings). About 5-6 months later i found that i needed a load rating of 95 or higher. They didnt argue or anything and straight away gave me new tyres with a load rating of 97 (toyo transpath).
They did say that it would be fine with a load rating of 93 or 94, but they also said that an insurance company will void your warranty if u crash and they find out. Id rather pay a little extra and keep my insurance.
Ralliart-AKKO
13-12-2007, 11:24 PM
A different page of the RAC WA website provides a different answer, see below:
http://rac.com.au/go/motoring/about-my-car/modifying-my-car/tyres-and-wheels
"The tyre load rating must meet or exceed the manufacturer's specifications.
The manufacturer's specified vehicle track must not be exceeded by more than 25mm."
Articuno
13-12-2007, 11:52 PM
93 is fine, heck i'm running 87 on those size tyres and they're fine. Magna's are overrated. But know that the tyre isn't legal.
Remind me not to drive around you again.
Disciple
14-12-2007, 04:44 AM
Ralliart-AKKO, not having a go at you, but don't you wonder what people who know anything about cars are gonna be thinking seeing a FWD Magna with massive tyres at the back and small ones at the front? I know I'd be thinking "What a f*cken tosser LOL!"
wookiee
14-12-2007, 05:23 AM
So assuming I get an engineers cert for anything that doesn't currently conform to the guidelines outlined here: http://www.dpi.wa.gov.au/licensing/1884.asp
yes, anything that doesn't meet the regs needs to be certified. just be aware that some things can NOT be certified, so you'd be best served having a chat with an engineer before you start.
The load / speed rating should be a non-issue according to the RAC WA website: http://rac.com.au/go/motoring/about-my-car/looking-after-my-car/car-tyres
Thanks to those who posted useful information, much appreciated!
that says you can use tyres with a lower SPEED rating, not LOAD rating.
A different page of the RAC WA website provides a different answer, see below:
http://rac.com.au/go/motoring/about-my-car/modifying-my-car/tyres-and-wheels
"The tyre load rating must meet or exceed the manufacturer's specifications.
The manufacturer's specified vehicle track must not be exceeded by more than 25mm."
like I said before, this CAN be certified. what this website is talking about are modifications that you can make WITHOUT getting an engineers' certification.
best bet is to find an engineer and have a chat about what you want to do. they should be able to advise you on what you can and can't do.
cheers,
.wook
wookiee
14-12-2007, 05:29 AM
Ralliart-AKKO, not having a go at you, but don't you wonder what people who know anything about cars are gonna be thinking seeing a FWD Magna with massive tyres at the back and small ones at the front? I know I'd be thinking "What a f*cken tosser LOL!"
19x8.5s are hardly small! :nuts:
and it can look pretty good. Dan's car looks tough, and you can hardly notice the 1.5" difference in the rims unless you look really close. they fill up the wheel well and give it an aggressive stance.
I say do it. it looks far less silly than 9.5s on the front and 8.5s on the back lol
cheers,
.wook
M4DDOG
14-12-2007, 06:04 AM
Remind me not to drive around you again.
I wouldn't be able to keep up with you anyway :P.
Disciple
14-12-2007, 12:18 PM
19x8.5s are hardly small! :nuts:
and it can look pretty good. Dan's car looks tough, and you can hardly notice the 1.5" difference in the rims unless you look really close. they fill up the wheel well and give it an aggressive stance.
I say do it. it looks far less silly than 9.5s on the front and 8.5s on the back lol
cheers,
.wook
:bowrofl: That would be something to see! Cheese cutters on the back. lol I keep thinking tho - 265's :nuts:. Anyway, good luck.
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