psychoboy

i didn't miss it the first time.

it doesn't answer the question.


the tire's section width is over 8" wide (regardless of its nominal size).
the side wall has less than a 1/2" drop to the bead.
unmounted, the beads sit nearly 7.5" apart.

so, my question remains, by what process does the tire perform better on a wheel that is 2" narrower than the bead spacing at rest, than it does on a wheel that is 1/2" wider than the bead spacing at rest?

TunerN00b

How about the simple fact that the bead only seats by pressing out into the wheel. If the wheel is as wide as the "at rest bead spacing", only air provides this pressure, which can cause the tire to come off the wheel quickly in a blowout scenario. When the wheel is slightly smaller in width than the bead, the tire carcass itself still provides some pressure to keep the tire in place when all hell breaks loose.

But, ignoring all of our guesses, a tire manufacturer will want to sell the tire to as many people as possible (simple business logic there). This logic states that they would never limit their potential sales by placing a width restriction that their own testing didn't mandate they needed for safety purposes.

The companies engineer and test with safety outside of perfect circumstances in mind. They know what is and isn't safe for their tires much better than any of us here do. Trust their numbers, they'd be sued out of existence if they didn't do their homework properly...

alphalanos

exactly. just take a look at any tire companies size charts

most 205/50/15 tires are approved for 5.5-7.5inch rim. this rim size keeps the tire within a safe operating range, where it will perform the way they intended it to, safely. you might say oh another 1/2 inch is nothing. but that will put the tire outside the design range that the manufacture considers safe. it can put excess stress on the sidewall, and prevent it from mounting fully on the rim. if you want to use unapproved rim sizes, then do it at your own risk, and know that driving it on the road with other drivers is extremely unsafe to them, and is mainly why most of us do not condone doing it.

drew-cavazos

225 the way to go....

JDMjoc

So guys I have my 96 honda civic coupe...And i have some axis OGOS 15x8, +25 offset...im kinda stuck on what the hell tires to get for it making sure that it dont rub my fenders....my car is pretty lw on coil over but i can always raise it but the thing is people keep telling me that 195/50 is ok...but these forums that peeple post they say its not safe to go that way...so wat is the best for my option?...my car is maybe 3 or 3.5 inch of the ground....help me to decide guys

TunerN00b

225/45-15
About the same diameter, approved for 7" - 8.5" wide wheels.

Wdbjr12345

i run a 195 50 on a 15x9.5 never had any issues

sTohc99

This was dead for 6 months and then brought back to life-ish so hopefully 3 months isn't a big deal. It all depends on the tire size but at least the Falken Ziex ZE-512, Kumho AST & ASX 205-40-16 are approved for 7.0-8.0" wide wheels. Their 205-45s are only approved up to 7.5". It'd be nice if people would actually get the facts before hating on people for "stretching" a 205 onto an 8" wide wheel when that's the upper limit that the tire manufacture recommends.

TunerN00b

This thread started off with questions about a 205/50-15, which is approved for different wheel sizes than a 205/40-16.

A 205/50-15 is stretched when put on a 15x8.

16s were never part of the conversation.

It would be nice if people actually bothered to read to "get the facts" before jumping in and throwing out completely irrelevant information.

KandabashiDevil

No, you don't. Keep dreaming kid.

Ridiculous posts like that should be moderated, and this guy should be banned.
There is so much bad information on Honda Tech ... Anyone can just sign up & start spewing vomit.

Kennyjai

iTrader: (3)

DO NOT RUN A 205/50 on a 8" RIM!!

You will have tire stretch like others have said, 205/50/15 and 205/45/15 tires can be only used on a rim up to 7.5".

You need to run 205/40/15 in order to be considered "safe".

If you decide to stretch tires, look cool with the rim lip sticking out yet run through $1000 of tires every month and possibility of killing yourself then you go do so at your own risk!

kelleycs

safe NO killing your bank account YES

The Destroyer

Depends on the tire. Not all tires are equal in the same specs.

Id say visually the 195/55 Dunlop here on a 7" wide wheel is stretched about the same or more than the Kumho on the previous page. (Limit for Dunlop, over the limit w/ the Kumho)

dlopse1.jpg?t=1242751010

Its all relative when dealing so close to the advised limits. I have 205's mounted on 15x8's and am not worried in the least.

Marvin1985

iTrader: (5)

Because Driftcar

kjmagnum

Nobody can discount 949Racing's experience on the track and they're ok with saying 195/50 and 205/50 can be used with their 15x8 wheels: http://949racing.com/15x8-6ul-nickel.aspx

They even mounted them to show it's fine (albeit with beefy tires).


If you buy quality tires then you'll be fine, especially if you just daily them. The people who have accidents are the ones who buy the cheapest tires, overstretch them, don't maintain them or replace them when necessary.

(. )( .)

Yeah this^^ if some nobodies can do it safely, than it's very safe for errryyybody to do so. Win!