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View Full Version : 215/50R-17 ?



SilentRacer
03-24-2007, 10:13 PM
I shouldn't have rubbing problems running 215/50R-17 on the 05 lgt rims right? My car isn't lowered.

Wiscon_Mark
03-24-2007, 10:43 PM
I doubt it - you have a BE, bigger wheel wells than the BD

SilentRacer
03-24-2007, 11:31 PM
thank you

sansMYSTi
03-26-2007, 11:33 AM
I run 225/45/17 on my BH, with no problems.

SilentRacer
03-26-2007, 11:48 AM
How about 225/60/17, will these fit? The problem is I hit a pot hole with my 225/45/17 and the wheel punctured the inside of the tire (big bulge sticking out). Now I want to get the biggest sidewall possible.

Also what is EMT in tire terms?

Wiscon_Mark
03-26-2007, 01:02 PM
60 would be a really tall sidewall on 17s.

SilentRacer
03-26-2007, 01:28 PM
I dont mind SUV tires :), but will they fit?

dodik
03-26-2007, 02:07 PM
225/60 will make your tire really big its what i have on now and your acceleration really long but higher top speed and its bad for your tranny to go with wrong overall diameter of wheel/tire try tire calculator you can find them thru google. but my rims are 16

dodik
03-26-2007, 02:35 PM
ok so i did some math yes going with 215/50R-17 will be better due to more volume of air in the tire plus .6" inrease in sidewall but mainly you are looking for that "R" index try to get tires with it. R stands for runflat which means it has extra rubber on the walls in case you get a flat you wont damage your rims as much thats a big plus. oh and also it will be closer to your stock overall diameter ==== longer trany life

Wiscon_Mark
03-26-2007, 02:55 PM
It's not going to do anything to your tranny unless you have mismatched tire diameters from front to back.

dodik
03-26-2007, 03:05 PM
but it will if you have bigger or smaller diameter tires than factory spec'd, for example if you have tires that are bigger then your speedometer will read short meaning while traveling at 70mph you speedo will give less like 65-67, but what doest it have to do with the tranny if at normal acceleration you car shift from second to third say at 2400rpm and 45 mph now it will be doing it at 2500rpm and 45mph(speedo) actual speed would be greater therefore burning your tranny multi clutch or whatever it is in it by the way Mark its not applicable to manual transmissions. bassicaly your tranny will be shifting late or earlier than factory tunned. hope this explains it a little bit.

Wiscon_Mark
03-26-2007, 03:07 PM
I sincerely doubt the difference of 100 rpms will do anything dangerous.

dodik
03-26-2007, 03:11 PM
it does after 45k miles that you usually get out of a set of tires my dad's old CRV died this way he had smaller tires that his boss put on the car and tranny went because of that

LegacyRob
03-26-2007, 03:31 PM
Not you change the topic any but when i had my jeep it had 28" tires stock and i lifted it with 32" tires and ran it for 4 yrs never harm the tranny. Sold it 2yrs ago and the guy is still drivin it, i never changed the gearing either.

SilentRacer
03-26-2007, 03:35 PM
I calculated with the 225/60/17 that my speedometer will be off by 5 mph. So 50 on the speedo will be about 55. I also can't see how that would effect the transmission. The suspension\drivetrain might have more stress because of the extra weight and tire diameter.

dodik
03-26-2007, 03:58 PM
do you have a decent mechanic you always go to, ask him what he thinks of this. but 225/60/17 will be big i got 225/60/16 and my car is higher i have it normal fit can you wait untill weekend lets swap wheels and see if you like it?

SilentRacer
03-26-2007, 04:05 PM
do you have a decent mechanic you always go to, ask him what he thinks of this. but 225/60/17 will be big i got 225/60/16 and my car is higher i have it normal fit can you wait untill weekend lets swap wheels and see if you like it?

Actually, do you have any pics from the side of your car where I could see how much room the tires take up? I was hoping to get new ones by the end of the week since I really dont want to risk driving with a bulging tire.

dodik
03-26-2007, 08:32 PM
https://sl-i.net/FORUM/images/imported/2007/03/SNV316075456-1.jpg

remember my rims are 16 so yours will be way too big IMO

SilentRacer
03-26-2007, 10:05 PM
I agree, it doesn't look like alot of room. What do u think about 225/55/17 then?

sybir
03-27-2007, 02:15 AM
The problem isn't wheelwell space (well, it will be a problem at some point) but the fact that a taller tire will hit your spring perch in the front. A 225/55/17 is a massive, massive tire, and I wouldn't be surprised to see rubbing problems on the suspension and inner fenders.

Dodik's car is an OB, that has higher spring perches to acommodate the taller tires. A 245/45/17 is almost as tall as an OB stock tire.


If you want a taller tire, I wouldn't go any higher than a 225/50/17. I'd recommend trying to find a set of tires with a stiffer sidewall. There's only so much you can do to protect against potholes in the real world; most big enough to do damage are going to do it to a 40-series tire on an 18" as easily as they'll do it on a 60series on a 15" rim. If you really want a fat sidewall, I'd go back to 16's, or find a tire shop who will do test fits (note that many shops won't put anything bigger than stock on for liability reasons)


There is absolutely no damage that will come from running taller tires all around except that if it's a huge difference, you'll have lss effective torque and be pushing the car a touch harder. Transmissions shift based on internal RPM and throttle opening, not external speed sensors, so you're not damaging or even changing anything. Your transmission will shift at the same RPM and indicated speed as before, it's just your real-world speed that's different because you'veeffectively changed your final drive ratio.

I have an OB that came stock with 205/70/15's, and I've run 19 different sets of wheels and tires, from 225/50/16's to 235/40/17's to 225/40/18's. all with no issues (the 235/40's are shorter so thecar accelerates faster, the 18's with 225/40/18's are taller and accelerate slower, etc.)

SilentRacer
03-27-2007, 07:50 AM
Thanks for the explanation.

Wiscon_Mark
03-27-2007, 09:24 AM
There is absolutely no damage that will come from running taller tires all around except that if it's a huge difference, you'll have lss effective torque and be pushing the car a touch harder. Transmissions shift based on internal RPM and throttle opening, not external speed sensors, so you're not damaging or even changing anything. Your transmission will shift at the same RPM and indicated speed as before, it's just your real-world speed that's different because you'veeffectively changed your final drive ratio.

That's what I was trying to say...thanks for the explanation, Sybir ;)

dodik
03-27-2007, 09:53 AM
i know this it may seem thats evrything is ok but if you are running shorter wheels your car will be downshifting way too many times and that what kills tranny just overworking it.

Wiscon_Mark
03-27-2007, 09:58 AM
i know this it may seem thats evrything is ok but if you are running shorter wheels your car will be downshifting way too many times and that what kills tranny just overworking it.

Where do you get this idea? Heck, if you run shorter wheels/tires, then it'd be easier for accleration, and you'd be downshifting less.

The only problem with short wheels that I see, is that it stresses the engine more, as you'd have a high RPM at a given cruising speed...even that is pretty minor.

dodik
03-27-2007, 10:25 AM
everytime you go uphill it does it and it did my father drove like that for good 45k miles it was a company car so he didnt care much for it.

Wiscon_Mark
03-27-2007, 10:27 AM
Sorry man, I think it was running normally...it's supposed to downshift when load gets too high on the engine...that's fairly independent of the wheel size.

dodik
03-27-2007, 10:31 AM
ok ok lets end this. in MY OPINION i dont recommend using wrong tires the stock diameter Silent would achive if he went with 215/50/17 and that is what i recommend and i DO NOT want to argue any more about it because you are not going to change MY OPINION on this matter Mark.

SilentRacer
03-27-2007, 11:35 AM
Lets give dodik the benefit of the doubt. I have heard and seen stranger things. Back on topic: After reading to everyone's opinion and sybir's lengthy explanation, I'm going with 225/50/17 grand touring tires. These will be a half an inch bigger then my current ones and all season grand touring to replace the high performance summer tires (the other thing I hated about these tires). This combination should yield stronger pothole protection.

dodik
03-27-2007, 11:39 AM
good choice youll accelerate a little slower but youll save on gas a bit and thats good

Wiscon_Mark
03-27-2007, 12:19 PM
I dunno, I would've switched to 16s if you just wanted pothole protection.

dodik
03-27-2007, 12:29 PM
and if you do i got those gold OB rims F/S

SilentRacer
03-27-2007, 01:35 PM
Sorry, I like my 17s just fine :grin:

dodik
03-27-2007, 01:55 PM
lol

Wiscon_Mark
03-27-2007, 05:33 PM
Sorry, I like my 17s just fine :grin:

Then quit your bitching! :lol:

SilentRacer
03-27-2007, 06:59 PM
Sorry, I like my 17s just fine :grin:

Then quit your bitching! :lol:

....this coming from a guy with a 9000+ post count :roll:

Wiscon_Mark
03-27-2007, 09:24 PM
I'm just saying that you complain about potholes and such, yet sport 17 inch rims...seriously dude :lol:

(I honestly don't know what post count has to do with it, I wasn't complaining about posting too much)

rougeben83
03-27-2007, 09:56 PM
Next time I'm back in NYC, I'll switch the wheels over from the van onto the Legacy...the MPV's running 225/55/17"s w/ dual bolt pattern rims.

Been meaning to make it as a joke pic anyway :D

If you want a taller tire, try a 205/55-60, 215/55. Odds are high you WONT be able to do this on a subaru 17" rim being the offset is higher, but on a Rota or other wheel with an offset of 48+ or so it may work.

Also, the important part is you keep the diameters the same on all for corners as much as possible- so use the same size and same type of tire. You have a manual tranny right? The AWD's on manuals are all mechanical, so they're not so figgidy with tire size as some people make them out to be.
I'm not sure about the autos' with their VLSD nonsense though :lol:

Oh yeah, if you're doing this for rim protection, the most important thing you can do is to KEEP YOUR TIRE PRESSURES UP. A lot of bent rims are due to a combination of recklessly crashing into a deep pothole and running low tire pressures.

The air in the tire is what keeps your rim from hitting anything hard. It's there as a cushion, so always make sure it's at least back up to 35psi like in the manual.

I've managed to tweak my LCA running 16"s rims around Queens; the tires and wheel was absolutely fine despite the sickening metallic *thunk* I heard when I crashed into a big pothole while making a right-hand sweeper.