daytona350z

iTrader: (19)

seems to be ok. you are just "stretching" the tire over the rim. many drifters use this method to keep the stidewalls stiff.
pic shows a 275/30/20 on a 11" rim

Red6

iTrader: (2)

Im running a 275/35/19 on my 19x10.5 Ro_JA by Rays R-25 rear wheels.

By no means will the tire pop or you rims are in danger with the 275.

This is a common tires size for a 10.5 rim especially on the 350Z.

If you put a 285 you may have to roll your fenders.

Heres a pic of my rear set up with Dunlop 275/35/19's.

Scratchy

yeah maybe but one pothole and you can kiss that rim goodbye...

BoostTed

Ive ran falken tires before and they run a bit narrow compared to lets say a S-03 that runs a bit wide.

BigMoeTaki42

I'm gonna have to disagree with most of you, I don't think there's anything wrong with this setup. I mean, you're stretching that rubber for sure, but there's nothing "wrong" with it. In other words, I don't think you're going to eff anything up (unless you run over a really big pothole). I'm pretty sure if you go with 285s you'll have to roll your fenders, but I'm not totally sure. Anyway, the rims are hot man, good luck if you're gonna go with bigger tires.

GQ 350z

iTrader: (13)

The problem is the 30 series--that is why it looks so stretched. With the 35 sidewall, it'll be a much cleaner stretch (barely noticeable). IMO try to get the 275/35's.

Good luck!

ravi

BoostTed

I actually agree with you. I ran falkens before and thats how Falken tires are, they run a bit narrow for the size.

apharmdb

iTrader: (1)

Most tire manufactures put your setup on the edge of their reccomended wheel / tire listing. Can you run 245's on a 9.5 inch wheel? Sure but the result is that the tire will look stretched. Only huge issue I can see is that you will be giving up some wheel protection from curbing. I ran the same setup on the street for a long time and have just recently switched to 255 on 9.5 and 285 on 10.5. Even ran the smaller sizes on a track day when I was too lazy to swap out my wheels. Here are some pics of the larger tires if you are interested. So my point of view would be this is a personal choice for you.

https://my350z.com/forum/wheels-and-tires/113650-pics-255-on-9-5-22-285-on-10-5-22-a.html

UCMyZ

Thanks for everyones input/suggestions.
Now, I've heard from some that if I go with the 255/35 fr, and 285/30 or 35 in the rear, I don't have to roll the fenders. But, some say I do. Does it make a difference if the rear has 30 or 35's? Does this has anything to do with having to roll the fenders (ex - if I had 30's I don't have to roll, but if I had 35's I do)?

Sorry, but I don't know much about tires.

Too bad I'm not a "drifter". But, I do want to have the tires flush with the rims. I'll ask discount tire today if they have any suggestions. Maybe the tires are mounted wrong.

Thanks!

Nano

iTrader: (1)

That is wrong... the sidewall is completely banana fuxored. How the hell will the sidewall behave in cornering?

That thing will handle like crap if pushed. Only good for show or drift.

I'd go 295 on a 10.5 wheel.

apharmdb

iTrader: (1)

Go with 255/35 - 285/35 as it's closer to stock. Been running it for a while now without any problems. As for rolling I would plan for it. You might be able to get away with it if you do not lower your car, but I'm not 100% sure. You will most definitely have to roll if you do lower it. Good luck.

apharmdb

iTrader: (1)

Plenty of tuning shop cars overseas in Japan have been running similar combos, and not just on their drfit cars. Companies like Top Secret, Amuse, Mines, C-West, etc have all run either 275 on 10.5 or 265 on 10.0's without any problems.

NismoGCoupe

IMO

10.5 - 275 = very stretched you better watch out for every pothole on the road
10.5 - 285 = min
10.5 - 295 = perfect
10.5 - 305 = max

jran76

iTrader: (1)

Hey James

I did a little research after seeing your setup.

Falken says you can run those tires on a 11" wheel (the 275/30/19). That will be very stretched and I think that is the issue. The tires seem to be mounted in a normal manner. I would not reccomend this setup, and the tire shop should have told you how aggresive it would be....

As mentioned, they should have sent you a 275/35 for a little more tire, especially with it stretched so thin, but again it is within the spec of the tire.

I guess, as mentioned, the Falken's may not be as wide as a Bridgestone S-03, which I ran a 275/35/19 on a 10" wheel and it looked nothing like what you have.

The 35's would help out some on the rear:
The 275/30/19 you are running is 4.4% smaller than stock (in diameter), and 275/35/19 is only 0.4% smaller than stock, this would have kept the actual tire size about the same as stock, which is always a good idea. For comparision the 245/35/19 front is only 0.8% smaller than stock. The idea is to keep the sizes as close to stock as possible.

This would also give you more rubber to stretch out over the wheel. The 285 gives you more in width, and if you go with a 285/35, you are 0.6% larger than stock diameter, so you have some extra height to stretch also. You would likely not rub with a 285, if you go any larger, say a 295 you will start to have problems (and you would have to go with a 30 series).

If it were me, I would go 255/35/19 on the front and 285/35/19 on the rear. This makes your front tire 0.2% larger than stock (almost indentical) and when you strech it you will loose the extra 0.2% in diameter anyway. On the rear, this makes it 0.6% larger than stock, but again when you stretch the tire across the wheel you will be almost dead on to the stock diameter.

This setup will give you an extra 10mm's of width on both the front and rear, an extra 3.5mm's of tire height in the front, and an extra 17.2mm's of extra tire height in the rear (this will also make the ride a little smoother). This also keeps the overall diameter of your wheels/tires at stock diameter and will cause less problems with the electronic controls of the car (traction control/VDC).

I would be very careful on bad roads/potholes, you have very little tread to protect your wheels, especially with the tire so stretched. There is also nothing to protect the wheels if you come across a curb, it is all lip.

The size tires you have are fine for a 8.5/9.5 combo, you may want to try and sell the tires to someone with that setup and see if you can find a 255 and 285/35 combo (there are not a lot of combos in this size).

Give me a call if you have any questions....

GQ 350z

iTrader: (13)

Hrmm..so if you're lowered in back (1.25") would a 285/35 on a 10.5" fit without rubbing? It is my understanding it is all based on the offset etc and some combination of the first two items.

I might roll my fenders-at that point tire size doesn't matter, correct (within reason fitment wise).

pdjafari

iTrader: (-1)

Yes rubbing/tire size/profile ALL do depend on one another. OFFSET is also another issue to look at, some say 285 rubs some say 295, thats b/c one user has a different offset than another or is lowered etc etc. You have to find out based on ALL the criteria which setup will work. (IE. ride height, offset, rimsize, tire size and profile) After you have decided on all these they should be able to tell you what size will fit w/o rubbing.

apharmdb

iTrader: (1)

For reference, I'm running 255/35/19 and 285/35/19 on 9.5+22 and 10.5+22 wheels. Rear fenders are mildly rolled (as I wanted to avoid paint cracks), and I'm lowered about 0.7 inches. Rear camber is set to -1.8 degrees which can also affect whether you rub or not. Had this setup for a while now without any issues.

I've also seen 265/30/19 and 295/30/19 on Eibachs (1 inch drop) and the fenders cut instead of rolled. Wheel specs were identical. He was running the Conti's though.

UCMyZ

Thanks Jran76 (Josh). I went to discount tire and they said the falkens are more rounded than say the nitto's <-- more squared. So, if I would of had the nitto's, they would be better. I called the place I had ordered this set up from, and he keeps telling me that he will call me back (has to have a manager take a look at the pics I sent him).

Discount tire said they won't give me credit on the falkens because they don't see many 19" tires (I think this is bull). But, he said he would give me around $30/tire on my stock 17". The cost of a new set of nittos in the same sizes I have will be around $1200 in which I don't have now.

I guess I need to wait to see what the place I ordered them from says.

Thanks. If possible, I will get the 255/35 and 285/35.
Also, I have the hotckis springs which lower the front by 9/16" and rear at 3/4". I like the way my Z sits. I didn't want to go any lower than that.

jran76

iTrader: (1)

Good luck James,

Yes the 285/35 would be great, I would not go with a 30 series unless you go up to a 295.

It is impossible to say if you would rub, as mentioned there are many factors. The two biggest are wheel offset and tire size. In your case I am not sure about your offset, although your wheels did not seem that aggresive, maybe a offset of +25 to +30. If your offset is above +25, you should be fine. The lower the offset the more the wheel will stick out and the more likely it is to rub. Not knowing the offset it is impossible to say....

The other factor, as mentioned is lowering. Most will say lowering will increase your chances of rubbing, and this is not always true. On our cars, when you lower you gain some negative camber, in your case probably around 1.5 degrees or more. This means your wheel is not moving strait up and down as the springs compress, the top actually moves in and away from the fender giving you more clearence.

Looking at you car now, you have tons of room, and I think you would be fine with a 285/35. If not a slight roll would not hurt and would be cheaper than replacing a wheel that has been damaged.

twilson

mike whats up with your navigation screen do you have a computer hooked up in your z. If so that is awesome dude, tight ride. Also can you play dvds in there and how did you do it? Do you still have the navigation as well? Thanks

Travis