On the fence...CX-5 20” wheels vs 19”
- Thread starter N7turbo
- Start date
Could be. From pics he showed me it looked kinda like 1/4 but definitely could've been half. My new setup will be 19x8.5 et43 on 255 tires.
- :
- Fredericton Canada
- :
- 2018 CX-5 GT
I suspect that the squishiness you feel is what gives those A36's less vibration and harshness that some other tires experience.
N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
For fitment confirmation I thought I'd calculate the total amount of working room in the front. When doing so, something surprised me. Since tires are changing, I realized I need to be measuring tire section width and not wheel width. All measurements not stated are in mm.
Toyo A36 225/55/19
Section width on a 7" wheel: 9 inches or 228.6mm
Outside distance from tire to flush: 20
Inside clearance: ~35
Total: 283.6
Continental DWS06 Plus 245/45/20
Section width on a 9" wheel: 10 inches or 254mm
Remaining clearance: 283.6-254 = 29.6
Wait, why do I have over an inch of clearance left? I increased the wheel width by 2 inches and I only have 2.2 inches in total.
...it's because the section width of the stock tire is quite wide, at 2 inches wider than the stock wheel. The width of the new tire will only be 1 inch wider than the wheel. There's the extra inch! And it's probably the cause of the squishy stock feel.
It doesn't look like it, but I can't deny the numbers. I went out and measured the Toyo and sure enough, it's 9" wide at the sidewall. This confirms there is plenty of room left for a 245 tire on a 9" wheel. Now to find the new offset.
If current flush fitment (front) is section width 228.6+20mm spacer
Then
New flush fitment would be section width 254-228.6 = 25.4/2 = 12.7 each side +7.3 = 20
So the offset needs to be quite different than I thought, at 45-7=38. This isn't making sense to me because according to https://www.1010tires.com/Tools/Wheel-Offset-Calculator# that would put my wheels out by 32mm.
We know this kind of offset causes serious poke so I must be doing something wrong. Here's a 20x9 +35. Thank you, @ziggi.
My measurement from front wheel to flush with fender is 24mm. Logic would dictate that the 9" wheel would already be flush at 46/47 offset (from 7 to 9 inch wheels is a 1 inch increase to each side = 25.4mm out). But it goes further, because I'm looking for flush tires, not flush wheels.
I think I'm losing it...
Toyo A36 225/55/19
Section width on a 7" wheel: 9 inches or 228.6mm
Outside distance from tire to flush: 20
Inside clearance: ~35
Total: 283.6
Continental DWS06 Plus 245/45/20
Section width on a 9" wheel: 10 inches or 254mm
Remaining clearance: 283.6-254 = 29.6
Wait, why do I have over an inch of clearance left? I increased the wheel width by 2 inches and I only have 2.2 inches in total.
...it's because the section width of the stock tire is quite wide, at 2 inches wider than the stock wheel. The width of the new tire will only be 1 inch wider than the wheel. There's the extra inch! And it's probably the cause of the squishy stock feel.
It doesn't look like it, but I can't deny the numbers. I went out and measured the Toyo and sure enough, it's 9" wide at the sidewall. This confirms there is plenty of room left for a 245 tire on a 9" wheel. Now to find the new offset.
If current flush fitment (front) is section width 228.6+20mm spacer
Then
New flush fitment would be section width 254-228.6 = 25.4/2 = 12.7 each side +7.3 = 20
So the offset needs to be quite different than I thought, at 45-7=38. This isn't making sense to me because according to https://www.1010tires.com/Tools/Wheel-Offset-Calculator# that would put my wheels out by 32mm.
We know this kind of offset causes serious poke so I must be doing something wrong. Here's a 20x9 +35. Thank you, @ziggi.
My measurement from front wheel to flush with fender is 24mm. Logic would dictate that the 9" wheel would already be flush at 46/47 offset (from 7 to 9 inch wheels is a 1 inch increase to each side = 25.4mm out). But it goes further, because I'm looking for flush tires, not flush wheels.
I think I'm losing it...
Last edited:
N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
Tonight's revelation, for those new to this journey and following along, as well as those seasoned enough to lend their input.
First heard from Fitment Industries, then Motortrend on further research:
youtu.be
Well paint my ass red and call me a baboon.
Everyone's new to this at some point...
So, this means a 245/45 DWS06 Plus on a "9" inch wheel is actually the same width as the wheel: 10 inches, according to Tire Rack specs.
Building on that, we can determine the new offset from the wheel width increase. If the wheel gets 2 inches wider, it comes out by 25.4mm. Since I measured flush to be wheel+24mm, bringing the offset in to 47mm would give a flush wheel AND tire. Actually I should average both sides in case my concrete isn't level.
EDIT: Today I measured all 4 wheels again both in the garage and in the driveway just to rule out level differences.
Millimeters from wheel rim to flush with fender trim:
FL: 24
FR: 28
RR: 29
RL 28
So I have a messed up front left wheel, hub, or something. Obviously I can't rely on that one as I have been. I'm going to have to rotate the wheels and see if the disparity follows. But this means the offset should be about 42 for a perfect wheel and fender alignment. 28-25.4=2.6, 45-2.6=42.
First heard from Fitment Industries, then Motortrend on further research:
How To Pick The Correct Offset For Your Wheels
Fitment Industries Offset and Backspacing Calculatorhttps://bit.ly/2xKshFFCheck out the largest wheel and fitment gallery here!https://bit.ly/2WFofacSo you w...
youtu.be
Motortrend said:
Well paint my ass red and call me a baboon.
Everyone's new to this at some point...
So, this means a 245/45 DWS06 Plus on a "9" inch wheel is actually the same width as the wheel: 10 inches, according to Tire Rack specs.
Building on that, we can determine the new offset from the wheel width increase. If the wheel gets 2 inches wider, it comes out by 25.4mm. Since I measured flush to be wheel+24mm, bringing the offset in to 47mm would give a flush wheel AND tire. Actually I should average both sides in case my concrete isn't level.
EDIT: Today I measured all 4 wheels again both in the garage and in the driveway just to rule out level differences.
Millimeters from wheel rim to flush with fender trim:
FL: 24
FR: 28
RR: 29
RL 28
So I have a messed up front left wheel, hub, or something. Obviously I can't rely on that one as I have been. I'm going to have to rotate the wheels and see if the disparity follows. But this means the offset should be about 42 for a perfect wheel and fender alignment. 28-25.4=2.6, 45-2.6=42.
Last edited:
N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
This should be my last post on the subject pre-purchase.
I have decided on an offset of 45. And here is a better mock-up:
This upgrade will:
I have decided on an offset of 45. And here is a better mock-up:
This upgrade will:
- Get better-looking wheels that are also easier to clean.
- Allow me to run Continental DWS06 Plus tires, which is not possible on the stock wheels.
- Combined with the Corksport springs, dramatically improve handling and eliminate the ridiculous stock stilted look.
GTXT23
LightFoot
19s look beefy and able to take a curb hit - great combo
The car care nut ( who is a lifetime Toyota engine builder/mechanic ) tells why he likes the Mazda CX5 Turbo (22) same as 23.24 - surprisingly it appears Mazda sold intake valve timing tech to Toyota and thus the new love affair between the 2 companies
www.youtube.com/watch?v=TFIxjBDlVkc
Go with the lighter option.
19”’s aren’t foolish, they are stock for turbo models.
Please post final pics and a link to the wheels
if lighter it will have all components working more efficiently as well meaning brakes will last longer, as well as suspension components.- :
- California
- :
- 2013 CX-5 Grand Touring AWD
2012 Jeep Wrangler Unlimited Rubicon
Install pics!!
- :
- California
- :
- 2013 CX-5 Grand Touring AWD
2012 Jeep Wrangler Unlimited Rubicon
Beautiful!
