ms3 stock tire size..little options

[wisniaPl]

I heard good word about this tire ...how much $$? I heard that gip is awesome but how long it can last??
when time comes to change my stock one I want go with 235/40/that why iM asking about this tire.....

BF Goodrich KDW2's price ? opinion??

 

[LER42]

225/40/18's shoud fit fine as well shoudn't they??

When I ordered new tires from TireRack, the guy there explained that the 225/40s would ride more harshly and perhaps mess with the ABS operation, compared to 225/45. He recommended the 40s for autocross only (more responsive), but the 45s for daily driving/autoX.

So I went with the 225/45/18s - Dunlop Direzza Z-1 Star Specs. They've been great on the street, in the rain, and on course. And they're about $50 a tire cheaper (at that size) than the hot Bridgestones. I'd recommend them.

 

[rjs_speed3]

225/45R18 DON'T call for the .5 inch wider rim, the 225/40R18's do. That's my point.

Check it out: http://www.tirerack.com/tires/Spec....&vehicleSearch=false&fromCompare1=yes&place=0

So no, MS3077, 225/40R18 do not fit.

Fack that! I work at Discount Tire... I have 225/40/18 Dunlop Direzza's all around... no problems what so ever...

the difference between 215 and 225 is ONLY 1/4 of an inch more on the road... soo, i don't think that you need to buy a whole new set of rims .5 of an inch wider, just to be able to put 1/4 of an inch of rubber on the road.... if anything.... I think Mazda should've gave us 225/40/18's from the start... it perfectly protects the rim from MOST curb rash... vs 215/45/18 which the wheel almost sits flush with the tire....

it almost "looks" like i would even be able to fit 235's on my stocks.... im not too sure if anyone's even tried this b4... usually businesses wouldn't even think about selling you something that are COMPLETELY out of specs even on their computers specs.... but we'll see, i'll give it a try...

 

[rjs_speed3]

When I ordered new tires from TireRack, the guy there explained that the 225/40s would ride more harshly and perhaps mess with the ABS operation, compared to 225/45. He recommended the 40s for autocross only (more responsive), but the 45s for daily driving/autoX.

tire rack sux btw... lmao!!! j/k j/k

i "personally" do not like the direzza's too much.... IMO... i thought that they would be pretty stickly, but no... well at least the way i drive... they skreech way tooo much for me... next i'll try something else...probably the rt-615s or the kdws.. we'll see...

the 225/40/18 actually spins faster than the 225/45/18 by 1 point something mph... but still no probs what so ever.....

 

[rjs_speed3]

They fit, but they are being stretched out on the rim beyond design spec, and that weakens the sidewall. You can force a tire onto a rim +/- .5 inches, sometimes a full inch, but that doesn't mean its safe. If your tires fail, the manufacturer will tell you to go to hell because you put them on rims that are narrower than specified.

that doesnt really affect the sidewall at all... all you need is the "bead" to seat... 215 to 225 is not extreme enough for you to blow a tire.... 215 to 235 or maybe even 245 (if the bead even seats) will still not blow a tire... the worst case senario would be that the rim "pops" off of the bead during any hard tension (burning out, hard accelaration, hard handling, hitting a bump/ curb hard enough...) at least, this is what i've learned in my profession...

 

[MS3077]

that doesnt really affect the sidewall at all... all you need is the "bead" to seat... 215 to 225 is not extreme enough for you to blow a tire.... 215 to 235 or maybe even 245 (if the bead even seats) will still not blow a tire... the worst case senario would be that the rim "pops" off of the bead during any hard tension (burning out, hard accelaration, hard handling, hitting a bump/ curb hard enough...) at least, this is what i've learned in my profession...

Thanks rjs_speed3! I was a little bummed at the prospect of buying a new set of tires again ,I just spent about $900.00 on some (the ones in my sig) - They work awesome btw, SU recommended and are the same tires they use on their cars.

 

[whitey4311]

Read those links on TireRack again.

The measured rim width is the rim width at which the tires will perform exactly to spec, with tread width and sidewall heights being exactly as advertised. Strictly speaking, we need a .5 inch wider wheel just to get to OEM tire sizes, if you're only going to fit to the measured rim width.

Rim width range is the width at which the tire will perform properly as designed, and safely, you just won't be getting EXACTLY 225mm wide contact patch and EXACTLY 45% sidewall height because of the way the sidewall is stretched/compressed in to fit various rim widths.

If you want to fit tires to your rims, check the rim width range. If your rim width falls in the range, the tire is fine for your rim. For us, with 18s, the best we can get is 225/45R18. 235 section widths or 40 aspect ratios push beyond our 7" rim.

OK thanks for that.

I will broaden my search and see what I can find.

Any suggestions?

 

[rjs_speed3]

Thanks rjs_speed3! I was a little bummed at the prospect of buying a new set of tires again ,I just spent about $900.00 on some (the ones in my sig) - They work awesome btw, SU recommended and are the same tires they use on their cars.

no problem!! it's just that i deal with this everyday, and i thought i'd finally chime in on this subject... lmao!!

 

[whitey4311]

Azenis RT-615

tell me about this tire. Is it shity or what?

I never heard of them other then around here but I would love some input.

 

[rjs_speed3]

Azenis RT-615

tell me about this tire. Is it shity or what?

I never heard of them other then around here but I would love some input.

these tires are a-simetrical, not too expensive, looks very aggressive, many autocrossers love them, they grip really really well, should be heat cycled, depending on how you drive or what not, they don't last too long... (as with every sticky tire...)

http://www.discounttire.com/dtcs/tires/falken/size/viewProductDetail.do?r=NVLINT&pc=18510

i like them.. i might go with these next, just to test out how long they really last me...

 

[Zimmer]

this is a great thread thanks all for the info ...i've been wanting to get bigger shoes for some time now... you know what they say about big shoes!

 

[rjs_speed3]

they're too big?? lol

 

[Zimmer]

hahaahha that's what she said

 

[rjs_speed3]

Rofl!!

 

[jp4130]

Running 225s on a 7'' inch wide rims is pushing it. My advice is to run at least a 1/2'' or ideally 1'' wider wheel then the minumum width that is allowed. If you follow this rule you will keep a nice crisp cantact patch. The tire will work better having its contact patch supported properly.

 

[wisniaPl]

so got tire for the price and some thing that will have grip...235/40...any ideas ??something that will last more than 8k my potenzas are a 4k and they look like slick on the front....

 

[happy and angry]

that doesnt really affect the sidewall at all... all you need is the "bead" to seat... 215 to 225 is not extreme enough for you to blow a tire.... 215 to 235 or maybe even 245 (if the bead even seats) will still not blow a tire... the worst case senario would be that the rim "pops" off of the bead during any hard tension (burning out, hard accelaration, hard handling, hitting a bump/ curb hard enough...) at least, this is what i've learned in my profession...

You are flat out wrong with everything you are saying.

When you exceed the minimum or maximum rim width for a given tire, you are putting more stress on the sidewall than the manufacturer deems safe for proper functioning of the tire, and you are increasing your risk of tire failure.

The minimum rim width for a 225/40R18's is 7.5 inches. The minimum rim width for a 225/45R18 is 7 inches (it may vary by manufacturer but so far I haven't seen that happen). Our rim is 7 inches wide. If you want to run tires that are larger than our tire manufacturers say our rim can support, you are free to do so, but suggesting to others that they should do the same because it is no big deal is pretty irresponsible.

Yes, you can fit tires onto smaller rims than specified and yes you can get the bead to seat properly. You CAN do a lot of things, if you want. This doesn't mean you should.

 

[happy and angry]

so got tire for the price and some thing that will have grip...235/40...any ideas ??something that will last more than 8k my potenzas are a 4k and they look like slick on the front....

235/40R18, Rim width range: 8" to 9.5"

http://www.tirerack.com/tires/Spec....&vehicleSearch=false&fromCompare1=yes&place=0

Squeezing this onto a 7" inch wide rim is really pushing it.

Seriously, 225/45R18 is probably the best you can do on our rim. It's a slightly wider contact patch, a bit taller sidewall, you'll get plenty of protection from curb rash. You guys can do whatever you want and whatever the shops around you are willing to do, but I'll stick within factory spec on tires. I don't **** around with the rubber I put on my car, because it's the single most important component of my car. I track my car, I push it hard in some corners, and the last thing I need is a snakebite flat or a sidewall failure because I've been stretching or squeezing tires to fit on a rim they aren't designed for.

 

[pidass15]

damn I was hoping to put 225/40 on my stock rim. How much will the sidewall differ in looks compared to the 225/45?

 

[happy and angry]

Both are within ~2% of the stock tire diameter, so it shouldn't be much.