Tyres For V35 Sedan With Coupe Rims

[sonicii]

Hi All,

I am in need of new tyres.

I have a V35 sedan, but came with Coupe 18in rims on it when I bought it. it currently has 245/45 tyres on the rear and 225/45 on the front, which seems to be standard on the Coupe.

I am thinking of going with 245/45 tyres all round. However, I am worried about the fronts touching the guard.

I had to roll the rear guards slightly after fitting 350Z springs and having the rear camber brought back into spec, which kicked the top of the wheel out slightly.

The fronts are fine with 225 tyres, but the camber isn't adjustable, so they have some negative camber with the 350z springs.

Has anyone tried 245/45 tyres on the front of a sedan with 18x8 +30 rims? If so, did you have any issues with them touching the guards?

Edited September 23, 2014 by sonicii

[grae35]

I also have a set of 18inch coupe rims which I use for motor sport with my sedan. Years ago a mate had 245/45r18 all round without any problems. However he like me has std springs and ride height.

Simplest way to tell is to temporarily rotate your wheels front to back for a day and find out. Rims are not identical front to back but are very close. Don't try any fast cornering just some low speed full lock turns to test for touching the guards,

[sonicii]

Simplest way to tell is to temporarily rotate your wheels front to back for a day and find out. Rims are not identical front to back but are very close. Don't try any fast cornering just some low speed full lock turns to test for touching the guards,

Good idea.. thanks. Not sure why I didn't think of that!!

Do you know what the difference is with the rims? I have had them both off and the only difference I can find is the stamp 'rear' and 'front' in the casting. they are all 18x8 +30. I just assumed that the stamps were due to the different standard tyre sizes front-rear.

[grae35]

You are correct in that both front and rear rims are stamped 18x8 and +30. So it would seem same size and offset. However they are also stamped front and rear as well making you think there must be some difference.

If you search the topic on G35 driver you can find a few ideas as to what this could be. One guy claims it is just to ensure that "knuckle heads" don't try and rotate the skinnier 225 tires to the rear. Another claims there is some sort of stud/projection on the wheel mounting plate that prevents the rear wheel from being fitted to the front. He claims if you remove the stud it will mount.

I personally can't say I have seen these studs on my rear wheels but haven't as yet tried to fit them to the front. Will try next time I swap my 17inch std rims for the coupe ones.

It is probably just to remind people they are not 'front to rear rotatable' I am guessing, as you also suggested in your last post

[ADDSKI]

coincidentally I was knocked back on pink slip yesterday because he said 18 inch rims were rubbing on inside of wheel arch.

[sonicii]

Ok, so I swapped the front and rears over and all is fine.. not rubbing under hard cornering, even at full lock.

VDC had a spak with smaller tyres on the rear. It doesn't have a problem with the smaller tyres on the front though, but that isn't really relevant as no-one is going to run smaller rear tyres normally.

Also put the rear and front rims side by side and had a good look at the differences. I found a different shape with the mounting surface as per the pictures below.

But there is nothing on the hubs that prevent either rim fitting anyway. That may be because I have a sedan which normally comes with the same size tyres all round, so there might be something on the coupe that is relevant to these different shapes

[grae35]

Interesting. I had never noticed those differences you point out. Glad to hear they do not rub the guards which is of course what really matters.

All good for your new 245's all round.

Pity you weren't in Brisbane as I have talked Costco into a great discount price on Michelin Pilot Super Sport in that size.

[sonicii]

Yeah, that is my next choice... what tyres to go with.. This car is my daily, so I don't need high performance tyres, some decent quality mid-range is what I am after... I currently have KU36s on the front, so the noise from them is driving me insane.. so quite tyres are high on the priority list.

[grae35]

Fair enough if you don't need UHP tyres. For my daily's I also use a Kumho but the KU39's. No where near the noise of the 36's. Not as brilliant in dry grip (few tyres can keep pace with the KU36 in the dry) but a better all-rounder. Considerably better in the wet and better mileage. There are many good brands around, just depends on what you can get locally and for what dollars.

Good luck.

[niZmO_Man]

I've read that KU39 aren't as good as the old KU31. That was enough for me to try other brands (Falken FK452, Dunlop SP Sport Maxx; cheap via Tempe Tyres).

The Michelins would be the bomb though. Perhaps the PS3?

[RBN1]

I've read that KU39 aren't as good as the old KU31. That was enough for me to try other brands (Falken FK452, Dunlop SP Sport Maxx; cheap via Tempe Tyres).

The Michelins would be the bomb though. Perhaps the PS3?

Dunno if the PS3's are normally this price but I got a set of x4 for our daily in 215 45 17 for $636 ($159ea) fitted just recently.

[Guest]

My coupe came with 245/45/18 rear and 245/40/18 front. Seems like a good choice by previous owner..