tire size??
tire size??
I have an 07 350z touring, its time for me to change my tires
i have the 18x8 front and 18x18.5 rear stock wheels
im wondering if i can fit the 245/40/18 front tires and 265/40/18 rear tires on those wheels and am i going to have any problems if i do that combo? will it even fit? if it does will i have problems with the fenders?
i know someone will probably close this thread but all i'm asking for is some help over here so i appreciate it if anybody can help me out.
i have the 18x8 front and 18x18.5 rear stock wheels
im wondering if i can fit the 245/40/18 front tires and 265/40/18 rear tires on those wheels and am i going to have any problems if i do that combo? will it even fit? if it does will i have problems with the fenders?
i know someone will probably close this thread but all i'm asking for is some help over here so i appreciate it if anybody can help me out.
New Member
Joined: Dec 2006
Posts: 7,337
Likes: 204
From: Edina, Minnesota
245/40-18” is perfect for your fronts. It fits well on your 8x18” wheels, and provides better handling and ride-quality.
265/40-18” is slightly short for the rear, and just a little wide for your 8.5/18” wheels. This tire should probably have at least a 9x18” wheel. With this said, you can get away with this “slightly too short and slightly too wide tire” on your rear wheels. Your tire dealer may not agree with me though. They will recommend nothing wider than a 255 tire, and probably suggest a 245/45-18” tire on the rear with your wheels.
No matter what tire size you go with, you will have no problem with fender-rubbing because the stock wheels have a 30 offset.
As David mentions: If you want to go with wider tires, consider aftermarket wheels that are at least 8.5x18” front and 9.5x18” rear. With this setup you have many tire size-options. The common setup is 245/40-18” front tires and 275/40-18” rear tires, but with wider aftermarket wheels, you can go even wider. The offset on your aftermarket wheels should be at least 22 to get an attractive-flush mount to the fenders.
But I understand where you are coming from… new aftermarket wheels are $$.
--Spike
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EDIT: The long answer is above.
The short answer is that the tires sizes you ask about will work fine on your car and its stock wheels.
The only downside is that your rear 265’s will look slightly bulged on a 18x8.5” rim.
265/40-18” is slightly short for the rear, and just a little wide for your 8.5/18” wheels. This tire should probably have at least a 9x18” wheel. With this said, you can get away with this “slightly too short and slightly too wide tire” on your rear wheels. Your tire dealer may not agree with me though. They will recommend nothing wider than a 255 tire, and probably suggest a 245/45-18” tire on the rear with your wheels.
No matter what tire size you go with, you will have no problem with fender-rubbing because the stock wheels have a 30 offset.
As David mentions: If you want to go with wider tires, consider aftermarket wheels that are at least 8.5x18” front and 9.5x18” rear. With this setup you have many tire size-options. The common setup is 245/40-18” front tires and 275/40-18” rear tires, but with wider aftermarket wheels, you can go even wider. The offset on your aftermarket wheels should be at least 22 to get an attractive-flush mount to the fenders.
But I understand where you are coming from… new aftermarket wheels are $$.
--Spike
-----------------------------
EDIT: The long answer is above.
The short answer is that the tires sizes you ask about will work fine on your car and its stock wheels.
The only downside is that your rear 265’s will look slightly bulged on a 18x8.5” rim.
Last edited by Spike100; Oct 27, 2008 at 04:55 PM. Reason: for clarity
New Member
Joined: Dec 2006
Posts: 7,337
Likes: 204
From: Edina, Minnesota
^^ I agree. 235’s on the front and 255’s on the rear will look good and work great on stock wheels. If you want to go wider, you should probably consider wider wheels. That way you have the appropriate wheel width for the wider tire.
That’s not to say you cannot go with a renegade tire size for your wheels (notice the positive reports from members doing this). It’s only that going past the manufacturer’s recommendation takes you into “dark territory” that may have unpredictable results. And, some people don’t like the look of bulged tires.
I like David’s comment (on a different thread), where he cautions against going too wide with a tire tread past the wheel’s width.
--Spike
That’s not to say you cannot go with a renegade tire size for your wheels (notice the positive reports from members doing this). It’s only that going past the manufacturer’s recommendation takes you into “dark territory” that may have unpredictable results. And, some people don’t like the look of bulged tires.
I like David’s comment (on a different thread), where he cautions against going too wide with a tire tread past the wheel’s width.
--Spike
