Time for new 19" tires - size variation - Infiniti QX30 Forum
User Tag List

 
LinkBack Thread Tools
post #1 of 7 (permalink) Old 01-16-2020, 11:30 AM Thread Starter
Senior Member
 
Join Date: Feb 2018
Posts: 178
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 54 Post(s)
(Thread Starter)
Default Time for new 19" tires - size variation

For those that have checked, there are not many options in the factory size of 235/45/19... I hadn't made my mind up on run-flats or not, but I think I wanted to switch over to Continentals (they have no run-flats in that size.) Two I was considering in this size are ContiProContact or ProContact GX

Has anyone changed to 245/40/19? The options are so much greater.
I really wanted ExtremeContact™ DWS06 in the OEM size, but it is offered at this alternate size that still fits our 19x8 rims. Probably will have my speedometer off about 1 mph or so.
Also really considering ControlContact ™Sport SRS, SureContact™ RX or ControlContact Sport™ A/S (discount tire only)


Has anyone gone from 235/45s to 245/40s?


Thanks
__XIS__ is offline  
post #2 of 7 (permalink) Old 01-16-2020, 01:29 PM
Junior Member
 
Join Date: Oct 2019
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Default

255/40/19 is even better
ET 35 should be fine, you can find out that,

Rim 9 J x 19
Mario Rossi is online now  
post #3 of 7 (permalink) Old 01-17-2020, 10:30 AM Thread Starter
Senior Member
 
Join Date: Feb 2018
Posts: 178
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 54 Post(s)
(Thread Starter)
Default

255's do not fit on the OEM 19x8 rims.




Quote:
Originally Posted by Mario Rossi View Post
255/40/19 is even better
ET 35 should be fine, you can find out that,

Rim 9 J x 19
__XIS__ is offline  
 
post #4 of 7 (permalink) Old 01-24-2020, 02:01 PM
Junior Member
 
Join Date: Sep 2019
Location: Panama City Beach, FL
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Talking Radar Dimax R8 Plus 235/45R-19 - 235/45R19 - V

Radar Dimax R8 Plus 235/45R-19 - 235/45R19 - V THESE ARE THE RUN FLATS I GOT FROM SIMPLETIRE.COM AND THEY ARE GREAT
gregthomas84 is offline  
post #5 of 7 (permalink) Old 01-29-2020, 11:13 AM Thread Starter
Senior Member
 
Join Date: Feb 2018
Posts: 178
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 54 Post(s)
(Thread Starter)
Default

I got myself the Continental DWS06 tires, 245/40/19. LOVE THEM
__XIS__ is offline  
post #6 of 7 (permalink) Old Today, 06:06 AM
Junior Member
 
Join Date: Oct 2019
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Default

have you guys notice some differences in the Odometer indicator m/h ? what about handle ? I'm on 235/50/18 and want to upgrade to 234/45 19 or 240/40/19......I thought was possible even the 255....but it is not the case to do it
Mario Rossi is online now  
post #7 of 7 (permalink) Old Today, 10:01 AM
Senior Member
 
p07r0457's Avatar
 
Join Date: Oct 2017
Posts: 326
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Garage
Default

Ignoring brand differences, a 235/50/18 and 235/45/19 have the nearly the exact same diameter (27.3") so the speedometer would reflect the same speed and odometer would reflect the same mileage.

Going to a 240/40/19 would have a diameter of 26.6" (-2.6%) and your speedometer/odometer would read slightly fast (and odometer would accumulate slightly more miles than you actually traveled). When your speedometer indicated 70mph you'd actually be traveling 68.2 mph.

2018 Infiniti QX30 Premium AWD - Majestic White
2019 Volvo XC60 T6 AWD Inscription - Onyx Black Metallic
2018 Honda Gold Wing Tour - Pearl White
p07r0457 is online now  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome