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Discussion Starter #1 (Edited)
I am looking to put much larger tires on these factory Ford 9.5" Y2K cobra wheels. Stock these wheels came with 265/40's. I am seeing lots of people running 275/35's, or 285/35's. I am looking to see if anyone has images of a set of 295/40's on the rears and what size tire they used up front. My goal is to better fill up the wheel wells without the need to roll the rear fenders. I also do not want to end up with a tire that is too wide and bulges over the wheel and curves the contact patch. I can flip the quads no problems. The car has a complete Tokico suspension on all 4 corners lowering it about 2".

Not all tries are the same so I am trying to understand what might fit best. I like the look of Nitto 555's with a more squared off sidewall to the tire patch. I also understand they may have a more narrower width that other similarly sized tires.

As pictured on the car: fronts and rears are 275/35 Nitto Motivo's. The 275's look to small for these wheels. 295's may be too much, but have to ask before I drop the cash. A 295 is 11.61" wide vs the factory 265's that are 10.43" wide (1.18" difference). The 275 is .79" narrower than a 295/40.
275s.jpg
275.jpg
tire calc.PNG
I read where it says not to exceed a 275 on a 9.5" wheel, but that seems pretty conservative.
 

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'90 Windveil Blue LX (Dart Turbo T56)
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nice looking ride man!

nittos tend to run little narrower than most, and although i'm not running 18x9.5s i will give you some data that you can use for reference as i'm running saleen lemans 18s with Nitto NT05 tires (expand sig for pic)

fronts are 18x8.5s, and 245/40ZR18 fits absolutely perfect

rears are 18x10s, and 285/35ZR18 fits absolutely perfect

problem is that the invo doesn't offer a 285 and so its either the 275 or 295 and like you said the 295 will be too big
the new 555 gen 2 have better sizes including a 285

why are you against rolling your fenders in the rears?

also, maybe have weldcraft widen the rear

 

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Discussion Starter #3
Nice Notch PK! I have a 90 fox that is also getting a few upgrades.

As for the Cobra, I avoided rolling the fenders just because it is pretty clean and mostly stock. I want to make sure it ages/appreciates well having owned it 25 years. I did not consider widening the rear wheels, but interesting idea I may have to revisit at some point. As for the Nitto's, I am looking at the G2 555's, not worried about all season as this car is retired from incremental weather. Here is that 285/40/18 vs a 275/35. I think the 3/4" will fit no problem. Would love to see what that looks like on someone else y2K wheels.

Tire calculator is here... 275/35-R18 vs 295/40-R18 Tire Comparison - Tire Size Calculator | Tacoma World


1066509
 

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'90 Windveil Blue LX (Dart Turbo T56)
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thanks man although you've got me beat on ownership by few years (25 vs 23)

eastwood fender roller is not just $70 and works great
(omg back in the day when they first made one it was like $350 and i used to rent mine out all the time)

i've had multiple sets of wheels done by weldcraft over the years and always top notch work
 
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