Stretched / WIDENING your rear wheel

@lrobbi I imagine this is still working great for you?

That's good news..... IMHO the stock 17/18 wheels have a great look and compliments the SS, 18 up front and your tire in the back would be a killer look and a twisty upgrade.

I'm now interested in something like this after the 2017 info...

Definitely don't want to buy 3 new wheels... So this or just a random wheel in the back?

Quote from MiM

I'm now interested in something like this after the 2017 info...

Definitely don't want to buy 3 new wheels... So this or just a random wheel in the back?

I'm going to wait until winter (non riding season for me) and send my rear Motegi out and have 2" added with a 1" wheel spacer to keep it centered

Let me know how it goes @Slunglow!

I wouldn't even know what to ask for in terms of measurements... Has anyone else done this to a 2015 SL 20 inch rear wheel? If so, share please...

Basically, I'm interested in keeping it centered and getting fatter... 305 or higher...

Quote from MiM

Let me know how it goes @Slunglow!

I wouldn't even know what to ask for in terms of measurements... Has anyone else done this to a 2015 SL 20 inch rear wheel? If so, share please...

Basically, I'm interested in keeping it centered and getting fatter... 305 or higher...

SlingShot SL:

Front Wheels 18X7.5 with +42mm Offset / 43.5 lbs with tires
Rear Wheel 20X9 with +45mm Offset / 53 lbs with tires

The SL's premium wheels are wrapped with 225/45R18 up front and 255/35R20 in the rear.

SlingShot Base:

Front Wheels 17X7 with +42mm Offset
Rear Wheel 18X9.5 with +45mm Offset

The Base gets 205/50R17 up front and 265/35R18 in the rear.

Lug nut Pattern is 5X114.3 for both

Keep in mind that while the size of the wheel is measured in inches, the offset is measured in Millimeters (mm).

What most people will look for is a wider rear tire... The main concerns with going with a wider rear are: keep the rear tire centered and not rub the swing arm...

So let's start with our center point. The rear offset is +45mm which is the center and keeps the wheel dead centered.
Ideally you will go for a wheel with +45mm offset...

The highest number (in my opinion) that you can go without noticing that the wheel is off the center is +/- 10mm

The higher the number of the offset the closer to the swing arm

The lower the number the farther out from the swing arm.

In other words:

+55mm will be 10mm closer to the swing arm (off center to the Right) Wheel cannot be too wide.
+35mm will be 10mm farther to the swing arm (off center to the left) Wheel can be wider.

Disclaimer: The above information was copied from a heavily censored site so it must be true if not please consider it for amusement purposes only.

5x114.3 - 1" Wheel Spacers - 12x1.25 Thread - 1 Pair – True Billet Wheel Adapters

I posted on the dark side a chart off tire and wheel sizes that you could go with and not mess up the MPH etc. so you can search there.
I put a 345/25/20 on the back of mine. Of course I had to go with after market wheels found a set that were custom and they matched the stock hub and offset perfectly.

Very nice @SlingRider! Care to share cost (for the wheels and tires, separate)? And link? Probably can't afford it, but to compare just stretching the stock through weld wheel.

Rim
width
(inch)Min.
tire
width
(mm)Ideal
tire
width
(mm)Max.
tire
width
(mm)

Mounting wider or narrower tires outside of min/max values presented in this chart is not recommended.

Quote from MiM

Very nice @SlingRider! Care to share cost (for the wheels and tires, separate)? And link? Probably can't afford it, but to compare just stretching the stock through weld wheel.

I purchased the Forgestar wheels through http://www.GetYourWheels.com.
Cost me around $1200 for the three.
Wheels from Discount Tire and cost me around $850

Yup... Can't afford it... I'll stretch and then wait for someone to sell the 2017 stock Kenda 305 on the cheap... I'm not a track star...

Or maybe someone to sell all 3 2017 SLR wheels and tires on the cheap...

Do we have a wheel/tire vendor on this forum? I may be ready to pull the trigger.

Bump...

So @lrobbi, how's it going? Still rocking the extended stock?

I'm thinking of going this route rather than buy 3 new wheels, budgetary reasons of course... So I thought I'd ask the smarter, technical superstars on this forum...

If I want a 345 wheel in the back, what do I ask weld wheel to do to my stock 18 inch base wheel or stock 20 inch SL wheel?

And what else do I need to buy? Saw hub spacers posted? But I need to be helped with what size, etc... I'd like to keep it centered of course...

Many thanks!

@MiM the spacer has to be half as wide as the rim extension in order for the tire to remain centered with the vehicle.That's assuming the pulley side of the rim is the only side being modified. And just for the record I'm not a smarter technical superstar I'm just a fellow Slinger that was contemplating the very same thing you are.

Quote from Slunglow

@MiM the spacer has to be half as wide as the rim extension in order for the tire to remain centered with the vehicle.That's assuming the pulley side of the rim is the only side being modified. And just for the record I'm not a smarter technical superstar I'm just a fellow Slinger that was contemplating the very same thing you are.

CORRECTION Slunglow. You ARE a smart technical superstar. You're one of the few who openly admit to not knowing everything and have the knowledge to seek out as much information as possible BEFORE making a decision. Not only is that the best way to learn, it's the best way to make the proper decision the FIRST time. Don't sell yourself short on that. For me, I know everything, and I'll prove it to the world right now.

1. I know what I know
2. I know what I don't know

Therefore, I know everything. And that's not always a good thing.

Thanks @Slunglow! @funinthesun is right...

So, looking at the 345/25/20 Toyo T1R which would best work on a 12 to 13 inch rim... Therefore, I send my 20 inch SL rear to weldwheel and ask for 3 inches (20x9 becomes 20x12)? Then buy a 1.5 inch hub spacer? Which spacer? 5x114.3 to 5x114.3, but there are many options... Anything else needed? Saw @SlingRider mention something about 66.1mm ring on TDS?

Did a lot of research last night, but still a bit confused...

Quote from MiM

Thanks @Slunglow! @funinthesun is right...

So, looking at the 345/25/20 Toyo T1R which would best work on a 12 to 13 inch rim... Therefore, I send my 20 inch SL rear to weldwheel and ask for 3 inches (20x9 becomes 20x12)? Then buy a 1.5 inch hub spacer? Which spacer? 5x114.3 to 5x114.3, but there are many options... Anything else needed? Saw @SlingRider mention something about 66.1mm ring on TDS?

Did a lot of research last night, but still a bit confused...

Bolt centers are 5 x 114.3 I would think you will need longer studs though.