Jump to content
The mkiv Supra Owners Club

Wheel fitment help please!


Recommended Posts

Hi guys, I've done a bit of searching around, but need some fitment gurus to help me out if poss?

 

Think of changing my wheels, and need to know if they're likely to cause fitment issues. Currently lowered circa 25-30mm, with UK spec brakes. Stock arches, with a very slight roll on the rear.

 

New wheels are 19x9.5 et 20, and 19x8.5 et20.

 

 

Link to comment
Share on other sites

If you let me know your current setup size we can work out how much extra/less clearance you have on each wheel but gauging it against a stock 17 inch setup this is the difference (guessing 35 as a profile for your new tyres)...

 

Fronts...

Stock - Proposed Wheel

Diameter: 643.3mm - 654.1mm

Circumference: 2021mm - 2054.9mm

Poke: 51.6mm - 88mm

Inset: 151.6mm - 128mm

Ride Height Gain: 0mm - 5.4mm

Arch Gap loss: 0mm - 5.4mm

 

Compared to stock wheels, the proposed wheel will have an inner rim which is 23.7mm further away from the suspension strut. The outer rim will poke out 36.4mm more than Stock.

 

 

Rears...

Stock - Proposed Wheel

Diameter: 635.8mm - 668.1mm

Circumference: 1997.4mm - 2098.9mm

Poke: 70.7mm - 100.7mm

Inset: 170.7mm - 140.7mm

Speedo Error: 0% - -4.83%

Reading at 30mph: 30mph - 28.55mph

Reading at 60mph: 60mph - 57.1mph

Ride Height Gain: 0mm - 16.15mm

Arch Gap loss: 0mm - 16.15mm

 

Compared to stock wheels, the proposed wheel will have an inner rim which is 30mm further away from the suspension strut. The outer rim will poke out 30mm more than Stock.

 

 

If you look at post 4 on this link you will see good pictures of Nics car showing his wheel and tyre sizes and offsets for you to compare against in a better visual way.

 

Your proposed wheels compared to Nics setup is below...

 

Fronts...

 

Nic - Proposed Wheel

Diameter: 653.2mm - 654.1mm

Circumference: 2052.1mm - 2054.9mm

Poke: 82.3mm - 88mm

Inset: 146.3mm - 128mm

Ride Height Gain: 0mm - 0.45mm

Arch Gap loss: 0mm - 0.45mm

 

Compared to Nics wheels, the proposed wheel will have an inner rim which is 18.4mm further away from the suspension strut. The outer rim will poke out 5.6mm more than Nics.

 

Rears...

 

Nic - Proposed Wheel

Diameter: 656.7mm - 668.1mm

Circumference: 2063.1mm - 2098.9mm

Poke: 95mm - 100.7mm

Inset: 159mm - 140.7mm

Ride Height Gain: 0mm - 5.7mm

Arch Gap loss: 0mm - 5.7mm

 

Compared to Nics wheels, the proposed wheel will have an inner rim which is 18.4mm further away from the suspension strut. The outer rim will poke out 5.6mm more than Nics.

 

Because of Nic having rolled arches and your setup sticking out 5.6mm more it might be very close and worth measuring or seeing if the same wheel is available in an offset to bring the wheel in 5-10mm but is more accurate to compare against your current wheel setup if you let us know the sizes.

 

 

As for tyre sizes though yes 245 on a 8.5j rim is fine for the front and 265 on a 9.5j rim for the back will fit fine.

 

More info on how to work it out can be found here

 

Let me know if you need a hand :)

Edited by ShawnPreece (see edit history)
Link to comment
Share on other sites

If you let me know your current setup size we can work out how much extra/less clearance you have on each wheel but gauging it against a stock 17 inch setup this is the difference (guessing 35 as a profile for your new tyres)...

 

Fronts...

Stock - Proposed Wheel

Diameter: 643.3mm - 654.1mm

Circumference: 2021mm - 2054.9mm

Poke: 51.6mm - 88mm

Inset: 151.6mm - 128mm

Ride Height Gain: 0mm - 5.4mm

Arch Gap loss: 0mm - 5.4mm

 

Compared to stock wheels, the proposed wheel will have an inner rim which is 23.7mm further away from the suspension strut. The outer rim will poke out 36.4mm more than Stock.

 

 

Rears...

Stock - Proposed Wheel

Diameter: 635.8mm - 668.1mm

Circumference: 1997.4mm - 2098.9mm

Poke: 70.7mm - 100.7mm

Inset: 170.7mm - 140.7mm

Speedo Error: 0% - -4.83%

Reading at 30mph: 30mph - 28.55mph

Reading at 60mph: 60mph - 57.1mph

Ride Height Gain: 0mm - 16.15mm

Arch Gap loss: 0mm - 16.15mm

 

Compared to stock wheels, the proposed wheel will have an inner rim which is 30mm further away from the suspension strut. The outer rim will poke out 30mm more than Stock.

 

 

If you look at post 4 on this link you will see good pictures of Nics car showing his wheel and tyre sizes and offsets for you to compare against in a better visual way.

 

Your proposed wheels compared to Nics setup is below...

 

Fronts...

 

Nic - Proposed Wheel

Diameter: 653.2mm - 654.1mm

Circumference: 2052.1mm - 2054.9mm

Poke: 82.3mm - 88mm

Inset: 146.3mm - 128mm

Ride Height Gain: 0mm - 0.45mm

Arch Gap loss: 0mm - 0.45mm

 

Compared to Nics wheels, the proposed wheel will have an inner rim which is 18.4mm further away from the suspension strut. The outer rim will poke out 5.6mm more than Nics.

 

Rears...

 

Nic - Proposed Wheel

Diameter: 656.7mm - 668.1mm

Circumference: 2063.1mm - 2098.9mm

Poke: 95mm - 100.7mm

Inset: 159mm - 140.7mm

Ride Height Gain: 0mm - 5.7mm

Arch Gap loss: 0mm - 5.7mm

 

Compared to Nics wheels, the proposed wheel will have an inner rim which is 18.4mm further away from the suspension strut. The outer rim will poke out 5.6mm more than Nics.

 

Because of Nic having rolled arches and your setup sticking out 5.6mm more it might be very close and worth measuring or seeing if the same wheel is available in an offset to bring the wheel in 5-10mm but is more accurate to compare against your current wheel setup if you let us know the sizes.

 

 

As for tyre sizes though yes 245 on a 8.5j rim is fine for the front and 265 on a 9.5j rim for the back will fit fine.

 

More info on how to work it out can be found here

 

Let me know if you need a hand :)

Legend Shawn, thanks for that.

 

Current wheels are 19x8.5 et25 and 19x9.5 et25, so the new wheels will likely stick out further by 5mm all round.

 

The thing I was most worried about, is cat hing the arches. I suspect the fronts will be fine, but I have a suspicion that the rears will need more rolling to clear. Annoying really, because I only resprayed the car a year ago!

 

 

Link to comment
Share on other sites

Gary my wheels on the supra is this fitment.

 

Front: 19×9.5 +22mm 5×114.3 (concave face)

Rear: 19×10.5 +22mm 5×114.3 (concave face)

 

I had it slightly rolled and it fit fine. So not sure if this information is any help at all. I can send you pics over if you want

Link to comment
Share on other sites

Gary my wheels on the supra is this fitment.

 

Front: 19×9.5 +22mm 5×114.3 (concave face)

Rear: 19×10.5 +22mm 5×114.3 (concave face)

 

I had it slightly rolled and it fit fine. So not sure if this information is any help at all. I can send you pics over if you want

That's encouraging, cheers K [emoji106]

 

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.